Fourteenth Ecumenical Council
E1032755
The Fourteenth Ecumenical Council, commonly known as the Second Council of Lyon (1274), was a major medieval church council that sought to address the East–West Schism and enact reforms within the Catholic Church.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Fourteenth Ecumenical Council canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13293230 — 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: Fourteenth Ecumenical Council Context triple: [Second Council of Lyon, alsoKnownAs, Fourteenth Ecumenical Council]
-
A.
Fifth Lateran Council
The Fifth Lateran Council was the 18th ecumenical council of the Catholic Church, convened in Rome (1512–1517) to address church reform, condemn certain philosophical doctrines, and respond to emerging challenges on the eve of the Protestant Reformation.
-
B.
Fourth Council of Constantinople
The Fourth Council of Constantinople was an ecumenical council of the Christian Church held in 869–870 (recognized by the Roman Catholic Church) that addressed the Photian Schism and issues of papal authority and church discipline.
-
C.
Council of Constantinople 1341
The Council of Constantinople of 1341 was a Byzantine ecclesiastical synod that played a central role in the Hesychast controversy, affirming Gregory Palamas’s defense of hesychast theology and shaping Eastern Orthodox doctrine on divine energies.
-
D.
Council in Constantinople of 1872
The Council in Constantinople of 1872 was an Eastern Orthodox synod that condemned ethnophyletism (nationalism in church organization) and formally declared the Bulgarian Exarchate schismatic.
-
E.
Fourth Lateran Council
The Fourth Lateran Council was a landmark 13th-century ecumenical council of the Catholic Church that enacted wide-ranging reforms in doctrine, church discipline, and Christian society, including defining transubstantiation and regulating clerical and lay life.
- 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: Fourteenth Ecumenical Council Target entity description: The Fourteenth Ecumenical Council, commonly known as the Second Council of Lyon (1274), was a major medieval church council that sought to address the East–West Schism and enact reforms within the Catholic Church.
-
A.
Fifth Lateran Council
The Fifth Lateran Council was the 18th ecumenical council of the Catholic Church, convened in Rome (1512–1517) to address church reform, condemn certain philosophical doctrines, and respond to emerging challenges on the eve of the Protestant Reformation.
-
B.
Fourth Council of Constantinople
The Fourth Council of Constantinople was an ecumenical council of the Christian Church held in 869–870 (recognized by the Roman Catholic Church) that addressed the Photian Schism and issues of papal authority and church discipline.
-
C.
Council of Constantinople 1341
The Council of Constantinople of 1341 was a Byzantine ecclesiastical synod that played a central role in the Hesychast controversy, affirming Gregory Palamas’s defense of hesychast theology and shaping Eastern Orthodox doctrine on divine energies.
-
D.
Council in Constantinople of 1872
The Council in Constantinople of 1872 was an Eastern Orthodox synod that condemned ethnophyletism (nationalism in church organization) and formally declared the Bulgarian Exarchate schismatic.
-
E.
Fourth Lateran Council
The Fourth Lateran Council was a landmark 13th-century ecumenical council of the Catholic Church that enacted wide-ranging reforms in doctrine, church discipline, and Christian society, including defining transubstantiation and regulating clerical and lay life.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
Catholic Church council
ⓘ
ecumenical council ⓘ |
| aimedToAddress |
East–West Schism
ⓘ
organization of a new crusade ⓘ papal election procedures ⓘ reform of the Catholic Church ⓘ |
| alsoKnownAs | Lyon II ⓘ |
| approvedBy | Pope Gregory X ⓘ |
| approvedCanonLaw | constitution on papal conclaves Ubi periculum ⓘ |
| approvedDoctrine | Filioque clause in the Nicene Creed ⓘ |
| attendedBy |
Greek (Byzantine) envoys
ⓘ
Latin Church bishops ⓘ representatives of Eastern Christian churches ⓘ |
| convokedBy | Pope Gregory X ⓘ |
| dealtWith |
benefices and church revenues
ⓘ
church discipline ⓘ crusade planning ⓘ relations between Latin and Greek churches ⓘ |
| endDate | 1274-07-17 ⓘ |
| hasHistoricalSignificanceFor |
East–West Church relations
ⓘ
development of papal election law ⓘ |
| hasName | Second Council of Lyon ⓘ |
| hasOrdinalNumber | 14 ⓘ |
| heldInBuilding | Lyon Cathedral ⓘ |
| isPartOf |
history of medieval Christianity
ⓘ
history of the Catholic Church ⓘ history of the papacy ⓘ |
| languageUsed |
Greek
ⓘ
Latin ⓘ |
| predecessor | Thirteenth Ecumenical Council ⓘ |
| presidedOverBy | Pope Gregory X ⓘ |
| recognizedAsEcumenicalBy |
Roman Catholic Church
ⓘ
linked to:
Roman Catholicism
|
| recognizedSupremacyOf |
Roman pontiff
ⓘ
linked to:
Pope
|
| resultedIn |
decree on papal conclaves
ⓘ
financial measures to support a crusade ⓘ measures on clerical life and morals ⓘ reform decrees on church discipline ⓘ regulation of papal elections ⓘ temporary union between the Roman Catholic Church and the Byzantine Church ⓘ |
| startDate | 1274-05-07 ⓘ |
| successor | Fifteenth Ecumenical Council ⓘ |
| tookPlaceDuringPontificateOf | Pope Gregory X ⓘ |
| tookPlaceIn |
Kingdom of France
ⓘ
Lyon ⓘ |
| tookPlaceInCentury | 13th century ⓘ |
| tookPlaceInYear | 1274 ⓘ |
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: Fourteenth Ecumenical Council Description of subject: The Fourteenth Ecumenical Council, commonly known as the Second Council of Lyon (1274), was a major medieval church council that sought to address the East–West Schism and enact reforms within the Catholic Church.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.