Ivan Stephen of Bulgaria
E1017261
Ivan Stephen of Bulgaria was a 14th-century tsar of Bulgaria from the Shishman dynasty whose brief reign reflected the political instability of the medieval Bulgarian state.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Ivan Stephen of Bulgaria canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12415476 — 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: Ivan Stephen of Bulgaria Context triple: [Shishman dynasty, hasMember, Ivan Stephen of Bulgaria]
-
A.
Ivan Vladislav of Bulgaria
Ivan Vladislav of Bulgaria was the last Tsar of the First Bulgarian Empire, known for his fierce resistance against Byzantine expansion before the empire’s eventual fall in 1018.
-
B.
Samuel of Bulgaria
Samuel of Bulgaria was a medieval Tsar who led the First Bulgarian Empire at its height around the turn of the 11th century, fiercely resisting Byzantine expansion until its eventual conquest.
-
C.
Michael of Bulgaria
Michael of Bulgaria was a medieval Bulgarian prince, known primarily as a son of Tsar Simeon I during the First Bulgarian Empire.
-
D.
Peter IV of Bulgaria
Peter IV of Bulgaria was a medieval Bulgarian tsar who played a key role in the restoration of Bulgarian independence and the establishment of the Second Bulgarian Empire in the late 12th century.
-
E.
Peter I of Bulgaria
Peter I of Bulgaria was a 10th-century tsar of the First Bulgarian Empire known for his long and relatively peaceful reign, during which Bulgaria strengthened its Christianity and diplomatic ties with Byzantium.
- 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: Ivan Stephen of Bulgaria Target entity description: Ivan Stephen of Bulgaria was a 14th-century tsar of Bulgaria from the Shishman dynasty whose brief reign reflected the political instability of the medieval Bulgarian state.
-
A.
Ivan Vladislav of Bulgaria
Ivan Vladislav of Bulgaria was the last Tsar of the First Bulgarian Empire, known for his fierce resistance against Byzantine expansion before the empire’s eventual fall in 1018.
-
B.
Samuel of Bulgaria
Samuel of Bulgaria was a medieval Tsar who led the First Bulgarian Empire at its height around the turn of the 11th century, fiercely resisting Byzantine expansion until its eventual conquest.
-
C.
Michael of Bulgaria
Michael of Bulgaria was a medieval Bulgarian prince, known primarily as a son of Tsar Simeon I during the First Bulgarian Empire.
-
D.
Peter IV of Bulgaria
Peter IV of Bulgaria was a medieval Bulgarian tsar who played a key role in the restoration of Bulgarian independence and the establishment of the Second Bulgarian Empire in the late 12th century.
-
E.
Peter I of Bulgaria
Peter I of Bulgaria was a 10th-century tsar of the First Bulgarian Empire known for his long and relatively peaceful reign, during which Bulgaria strengthened its Christianity and diplomatic ties with Byzantium.
- F. None of above. chosen
Statements (38)
| Predicate | Object |
|---|---|
| instanceOf |
Tsar of Bulgaria
ⓘ
medieval Bulgarian ruler ⓘ member of the Shishman dynasty ⓘ |
| associatedWith |
Shishman rule in Bulgaria
ⓘ
political instability of the Second Bulgarian Empire ⓘ |
| capitalDuringReign | Tarnovo NERFINISHED ⓘ |
| century | 14th century ⓘ |
| conflict | Bulgarian–Serbian relations in the 14th century ⓘ |
| country | Second Bulgarian Empire NERFINISHED ⓘ |
| dynasty | Shishman dynasty NERFINISHED ⓘ |
| ethnicGroup | Bulgarians NERFINISHED ⓘ |
| father | Michael Shishman of Bulgaria NERFINISHED ⓘ |
| gender | male ⓘ |
| governmentForm | monarchy ⓘ |
| hasGivenName |
Ivan
NERFINISHED
ⓘ
Stephen NERFINISHED ⓘ |
| historicalPeriod | Late Middle Ages ⓘ |
| historicalSignificance | example of short-lived Bulgarian tsars in the 14th century ⓘ |
| languageOfName | Bulgarian ⓘ |
| monarchType | medieval tsar ⓘ |
| mother | Anna Neda of Serbia NERFINISHED ⓘ |
| nobleFamily | Shishman dynasty NERFINISHED ⓘ |
| notableFor |
brief reign as tsar of Bulgaria
ⓘ
reign during political instability in medieval Bulgaria ⓘ |
| occupation | monarch ⓘ |
| positionHeld | Tsar of Bulgaria ⓘ |
| predecessor | Michael Shishman of Bulgaria NERFINISHED ⓘ |
| realm | Bulgaria NERFINISHED ⓘ |
| region | Balkans ⓘ |
| reignEnd | 1331 ⓘ |
| reignStart | 1330 ⓘ |
| relative |
Stefan Dušan
NERFINISHED
ⓘ
Stefan Uroš III Dečanski NERFINISHED ⓘ |
| religion |
Eastern Orthodox Christianity
ⓘ
surface form:
Eastern Orthodox Church
|
| successor | Ivan Alexander of Bulgaria NERFINISHED ⓘ |
| successorStateContext | weakened Second Bulgarian Empire ⓘ |
| title |
Emperor of the Bulgarians
NERFINISHED
ⓘ
Tsar ⓘ |
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: Ivan Stephen of Bulgaria Description of subject: Ivan Stephen of Bulgaria was a 14th-century tsar of Bulgaria from the Shishman dynasty whose brief reign reflected the political instability of the medieval Bulgarian state.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.