Roman emperor Constantine the Great
E5881
Roman emperor Constantine the Great was the first Roman ruler to convert to Christianity and is best known for legalizing the religion, founding Constantinople, and reshaping the Roman Empire’s religious landscape.
All labels observed (15)
How this entity was disambiguated
This entity first appeared as the object of triple T62923 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Roman emperor Constantine the Great Context triple: [Chi-Rho, associatedWith, Roman emperor Constantine the Great]
-
A.
Emperor
The Emperor is the ceremonial monarch and symbolic head of state of Japan, representing the continuity and unity of the Japanese nation.
-
B.
Julius
Julius is the first given name of J. Robert Oppenheimer, the American theoretical physicist known as the "father of the atomic bomb."
-
C.
James
James is a common masculine given name of Hebrew origin meaning "supplanter," widely used in English-speaking countries.
-
D.
Paul
Paul is a masculine given name of Latin origin, widely used in many Western and Christian-influenced cultures.
-
E.
Jesus Christ
Jesus Christ is believed by Christians to be the incarnate Son of God and the Savior of humanity whose life, death, and resurrection are the foundation of the Christian faith.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Roman emperor Constantine the Great Target entity description: Roman emperor Constantine the Great was the first Roman ruler to convert to Christianity and is best known for legalizing the religion, founding Constantinople, and reshaping the Roman Empire’s religious landscape.
-
A.
Emperor
The Emperor is the ceremonial monarch and symbolic head of state of Japan, representing the continuity and unity of the Japanese nation.
-
B.
Julius
Julius is the first given name of J. Robert Oppenheimer, the American theoretical physicist known as the "father of the atomic bomb."
-
C.
James
James is a common masculine given name of Hebrew origin meaning "supplanter," widely used in English-speaking countries.
-
D.
Paul
Paul is a masculine given name of Latin origin, widely used in many Western and Christian-influenced cultures.
-
E.
Pontius Pilate
Pontius Pilate was the Roman governor of Judea in the early 1st century CE, best known for presiding over the trial of Jesus and authorizing his crucifixion.
- F. None of above. chosen
Statements (95)
| Predicate | Object |
|---|---|
| instanceOf |
Byzantine imperial founder
ⓘ
Christian convert ⓘ Roman emperor ⓘ historical figure ⓘ |
| alsoKnownAs |
Roman emperor Constantine the Great
ⓘ
surface form:
Constantine I
Constantinus Magnus ⓘ |
| associatedWith | transition from Classical Rome to Byzantine Empire ⓘ |
| battle | Battle of the Milvian Bridge ⓘ |
| battleDate | 28 October 312 ⓘ |
| becameSeniorAugustus | 324 ⓘ |
| birthDate |
c. 272
ⓘ
c. 273 ⓘ c. 274 ⓘ |
| birthPlace |
Moesia
ⓘ
Naissus ⓘ Naissus, in the Roman province of Moesia (modern Niš, Serbia) ⓘ |
| burialCity |
Istanbul
ⓘ
surface form:
Constantinople
|
| burialPlace | Church of the Holy Apostles ⓘ |
| canonizedBy |
Eastern Orthodox Christianity
ⓘ
surface form:
Eastern Orthodox Church
|
| capitalMovedTo |
Istanbul
ⓘ
surface form:
Constantinople
|
| child |
Constans
ⓘ
Constantina ⓘ Constantine II ⓘ Constantius II ⓘ Crispus ⓘ Helena ⓘ
surface form:
Helena (daughter of Constantine)
|
| coEmperorWith |
Galerius
ⓘ
Licinius ⓘ Maxentius ⓘ Maximian ⓘ |
| coinageReform | introduction of the solidus ⓘ |
| convened | First Council of Nicaea ⓘ |
| councilDate | 325 ⓘ |
| councilLocation |
First Council of Nicaea
ⓘ
surface form:
Nicaea
|
| culturalImpact | Christianization of the Roman Empire ⓘ |
| deathDate | 22 May 337 ⓘ |
| deathPlace |
Nicomedia (traditionally)
ⓘ
surface form:
Nicomedia
Nicomedia (traditionally) ⓘ
surface form:
Nicomedia, Bithynia
near Constantinople ⓘ |
| defeated |
Licinius
ⓘ
Maxentius ⓘ |
| doctrineInfluenced | Nicene Creed ⓘ |
| dynasty | Constantinian dynasty ⓘ |
| edictOfMilanDate | 313 ⓘ |
| father | Constantius Chlorus ⓘ |
| feastDay | 21 May ⓘ |
| feastSharedWith | Helena ⓘ |
| foundedCity |
Istanbul
ⓘ
surface form:
Constantinople
|
| foundedCityDate | 11 May 330 ⓘ |
| foundedCityOnSiteOf | Byzantium ⓘ |
| fullName |
Roman emperor Constantine the Great
self-linksurface differs
ⓘ
surface form:
Flavius Valerius Constantinus
|
| intervenedIn |
Arianism
ⓘ
surface form:
Arian controversy
|
| issued | Edict of Milan ⓘ |
| issuedWith | Licinius ⓘ |
| knownFor |
First Council of Nicaea
ⓘ
surface form:
Council of Nicaea
Edict of Milan ⓘ first Roman emperor to convert to Christianity ⓘ founding Constantinople ⓘ legalizing Christianity in the Roman Empire ⓘ reshaping the religious landscape of the Roman Empire ⓘ |
| language | Latin ⓘ |
| legacy |
foundation of Constantinople as a new imperial capital
ⓘ
model of Christian emperorship in Late Antiquity ⓘ |
| legalAct |
Sunday as a day of rest in the Roman Empire
ⓘ
granting privileges to Christian clergy ⓘ restoring confiscated church property ⓘ |
| legalStatusOfChristianity | from persecuted to legally recognized and favored ⓘ |
| militaryRankBeforeEmperor | tribunus ⓘ |
| mother | Helena ⓘ |
| mottoAssociated | In hoc signo vinces ⓘ |
| partOf | Tetrarchic system (initially) ⓘ |
| patronage |
Roman emperors
ⓘ
surface form:
Byzantine emperors
Christian imperial ideology ⓘ |
| policy |
imperial support for the Christian Church
ⓘ
toleration of Christianity ⓘ |
| predecessor | Constantius Chlorus ⓘ |
| promoted | Christian bishops at court ⓘ |
| reignAs | Roman emperor ⓘ |
| reignEnd | 22 May 337 ⓘ |
| reignStart | 25 July 306 ⓘ |
| religion | Christianity ⓘ |
| roleInCouncilOfNicaea | presided as patron and convener ⓘ |
| ruledOver |
Byzantine Empire
ⓘ
surface form:
Eastern Roman Empire
Western Roman Empire ⓘ unified Roman Empire ⓘ |
| solidusIntroductionDate | c. 312–313 ⓘ |
| spouse |
Fausta
ⓘ
Minervina ⓘ |
| successor |
Constans
ⓘ
Constantine II ⓘ Constantius II ⓘ |
| sundayLawDate | 321 ⓘ |
| title |
pontifex maximus
ⓘ
surface form:
Pontifex Maximus
|
| victoryResult | sole ruler of the Roman Empire ⓘ |
| visionBeforeBattle | Christian symbol in the sky ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Roman emperor Constantine the Great Description of subject: Roman emperor Constantine the Great was the first Roman ruler to convert to Christianity and is best known for legalizing the religion, founding Constantinople, and reshaping the Roman Empire’s religious landscape.
Referenced by (37)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Constantine the Great
subject surface form:
Chi-Rho
subject surface form:
Chi-Rho
this entity surface form:
Constantinian dynasty
this entity surface form:
Constantine the Great
this entity surface form:
Constantine
this entity surface form:
Constantine the Great
this entity surface form:
Constantine the Great
this entity surface form:
Constantine the Great
Roman emperor Constantine the Great
→
fullName
→
Roman emperor Constantine the Great
self-linksurface differs
ⓘ
subject surface form:
Constantine the Great
this entity surface form:
Flavius Valerius Constantinus
subject surface form:
Constantine the Great
this entity surface form:
Constantine I
this entity surface form:
Roman Emperor Constantine I
this entity surface form:
Constantine I
this entity surface form:
Constantine I
this entity surface form:
Constantine I
this entity surface form:
reign of Constantine the Great
this entity surface form:
Emperor Constantine the Great
this entity surface form:
Roman Emperor Constantine the Great
this entity surface form:
Emperor Constantine the Great
subject surface form:
Caesar (imperial title)
this entity surface form:
Constantine the Great
this entity surface form:
Roman Emperor Constantine I
Feast of the Exaltation of the Holy Cross
→
historicallyLinkedTo
→
Roman emperor Constantine the Great
ⓘ
this entity surface form:
Emperor Constantine the Great
this entity surface form:
Flavius Valerius Constantinus (Constantine the Great)
this entity surface form:
Emperor Constantine I
this entity surface form:
Emperor Constantine the Great
this entity surface form:
Emperor Constantine the Great
this entity surface form:
Emperor Constantine the Great
UNESCO World Heritage Site (Roman Monuments, Cathedral of St Peter and Church of Our Lady in Trier)
→
associatedWith
→
Roman emperor Constantine the Great
ⓘ
subject surface form:
Roman Monuments, Cathedral of St Peter and Church of Our Lady in Trier
this entity surface form:
Roman Emperor Constantine the Great
this entity surface form:
Constantine I secured naval supremacy in the region
this entity surface form:
Constantine controlled both eastern and western provinces
this entity surface form:
Emperor Constantine the Great
Basilica of Maxentius and Constantine
→
constructionCompletedBy
→
Roman emperor Constantine the Great
ⓘ
this entity surface form:
Emperor Constantine the Great
this entity surface form:
Byzantium came under Constantine's control
subject surface form:
Meskel
this entity surface form:
Emperor Constantine the Great
this entity surface form:
Emperor Constantine the Great
subject surface form:
True Cross
this entity surface form:
Emperor Constantine the Great