Ivan Asen II
E303912
Ivan Asen II was a prominent 13th-century Bulgarian tsar who presided over the political, economic, and cultural zenith of the Second Bulgarian Empire.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Ivan Asen II of Bulgaria | 8 |
| Ivan Asen II canonical | 4 |
| Tsar Ivan Asen II of Bulgaria | 2 |
| Tsar Ivan Asen II | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2763427 — 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 Asen II Context triple: [Second Bulgarian Empire, notableRuler, Ivan Asen II]
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A.
Ivan Asen I
Ivan Asen I was a medieval Bulgarian tsar who, together with his brother Peter IV, led the successful uprising against Byzantine rule and helped establish the Second Bulgarian Empire in the late 12th century.
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B.
Kaloyan of Bulgaria
Kaloyan of Bulgaria was a powerful tsar of the Second Bulgarian Empire (r. 1197–1207) known for defeating the Crusaders at the Battle of Adrianople and expanding Bulgarian influence in the Balkans.
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C.
Simeon I of Bulgaria
Simeon I of Bulgaria was a powerful medieval Bulgarian tsar whose reign (893–927) marked the political and cultural zenith of the First Bulgarian Empire and earned him the epithet "the Great."
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D.
Ivan Shishman
Ivan Shishman was the final medieval tsar of Bulgaria, ruling during the late 14th century as the Second Bulgarian Empire collapsed under Ottoman conquest.
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E.
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.
- 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 Asen II Target entity description: Ivan Asen II was a prominent 13th-century Bulgarian tsar who presided over the political, economic, and cultural zenith of the Second Bulgarian Empire.
-
A.
Ivan Asen I
Ivan Asen I was a medieval Bulgarian tsar who, together with his brother Peter IV, led the successful uprising against Byzantine rule and helped establish the Second Bulgarian Empire in the late 12th century.
-
B.
Kaloyan of Bulgaria
Kaloyan of Bulgaria was a powerful tsar of the Second Bulgarian Empire (r. 1197–1207) known for defeating the Crusaders at the Battle of Adrianople and expanding Bulgarian influence in the Balkans.
-
C.
Simeon I of Bulgaria
Simeon I of Bulgaria was a powerful medieval Bulgarian tsar whose reign (893–927) marked the political and cultural zenith of the First Bulgarian Empire and earned him the epithet "the Great."
-
D.
Ivan Shishman
Ivan Shishman was the final medieval tsar of Bulgaria, ruling during the late 14th century as the Second Bulgarian Empire collapsed under Ottoman conquest.
-
E.
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.
- F. None of above. chosen
Statements (48)
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 Asen II Description of subject: Ivan Asen II was a prominent 13th-century Bulgarian tsar who presided over the political, economic, and cultural zenith of the Second Bulgarian Empire.
Referenced by (15)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Ivan Asen II
linked to: Ivan Asen II
linked to: Ivan Asen II
linked to: Ivan Asen II
linked to: Ivan Asen II
linked to: Ivan Asen II
linked to: Ivan Asen II
linked to: Ivan Asen II
linked to: Ivan Asen II
linked to: Ivan Asen II
linked to: Ivan Asen II