Ivailo
E1008008
13th-century Bulgarian person
Bulgarian monarch
Tsar of Bulgaria
medieval ruler
peasant leader
rebel leader
Ivailo was a 13th-century Bulgarian peasant leader who led a popular uprising and briefly ruled as Tsar of Bulgaria.
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T12897057 — 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: Ivailo Context triple: [Constantine Tikh Asen, successor, Ivailo]
-
A.
Vasil
Vasil is a masculine given name, commonly used in Slavic and Balkan countries, that is related to names like Vasyl and Basil.
-
B.
Borislav
Borislav is a masculine given name of Slavic origin, commonly used in Eastern European countries.
-
C.
Malko Tarnovo
Malko Tarnovo is a small town in southeastern Bulgaria near the Turkish border, known as the only Bulgarian settlement within the Strandzha Nature Park.
-
D.
Georgi
Georgi is a common Bulgarian male given name, widely used across Slavic countries and derived from the Greek name Georgios.
-
E.
Dimitar
Dimitar is a masculine given name of Slavic origin, commonly used in Bulgaria and other Eastern European countries.
- 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: Ivailo Target entity description: Ivailo was a 13th-century Bulgarian peasant leader who led a popular uprising and briefly ruled as Tsar of Bulgaria.
-
A.
Vasil
Vasil is a masculine given name, commonly used in Slavic and Balkan countries, that is related to names like Vasyl and Basil.
-
B.
Borislav
Borislav is a masculine given name of Slavic origin, commonly used in Eastern European countries.
-
C.
Malko Tarnovo
Malko Tarnovo is a small town in southeastern Bulgaria near the Turkish border, known as the only Bulgarian settlement within the Strandzha Nature Park.
-
D.
Georgi
Georgi is a common Bulgarian male given name, widely used across Slavic countries and derived from the Greek name Georgios.
-
E.
Dimitar
Dimitar is a masculine given name of Slavic origin, commonly used in Bulgaria and other Eastern European countries.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
13th-century Bulgarian person
ⓘ
Bulgarian monarch ⓘ Tsar of Bulgaria ⓘ medieval ruler ⓘ peasant leader ⓘ rebel leader ⓘ |
| activePeriod | 1270s ⓘ |
| alsoKnownAs |
Bardokva
ⓘ
Ivailo of Bulgaria ⓘ Ivaylo ⓘ
linked to:
Ivailo
|
| centuryOfActivity | 13th century ⓘ |
| conflict |
Bulgarian–Mongol conflicts
ⓘ
Internal civil war in the Second Bulgarian Empire ⓘ |
| country | Second Bulgarian Empire ⓘ |
| deathApproximateDate | circa 1280 ⓘ |
| deathCause | assassination ⓘ |
| deathPlace | Golden Horde ⓘ |
| dynasticStatus | founder of a short-lived ruling line ⓘ |
| ethnicGroup | Bulgarian ⓘ |
| fatherInLaw | Michael VIII Palaiologos ⓘ |
| governedTerritory | Second Bulgarian Empire ⓘ |
| historicalPeriod | High Middle Ages ⓘ |
| historicalReputation |
example of social mobility in medieval Balkans
ⓘ
symbol of popular resistance ⓘ |
| languageContext |
Bulgarian
ⓘ
linked to:
Bulgarian language
|
| marriagePurpose | legitimizing his rule through imperial connections ⓘ |
| motherInLaw | Theodora Palaiologina ⓘ |
| notableFor |
briefly ruling as Tsar despite low social origin
ⓘ
defeating Mongol (Tatar) raiders in northeastern Bulgaria ⓘ leading a major peasant uprising in Bulgaria ⓘ overthrowing Tsar Constantine Tikh ⓘ |
| opponent |
Bulgarian boyar aristocracy
ⓘ
Byzantine Empire ⓘ Mongol (Tatar) forces ⓘ
linked to:
Mongol-Tatar troops
|
| overthrew | Constantine Tikh ⓘ |
| positionHeld | Tsar of Bulgaria ⓘ |
| predecessor | Constantine Tikh ⓘ |
| regionOfActivity | Bulgaria ⓘ |
| reignEnd | 1279 ⓘ |
| reignStart | 1277 ⓘ |
| socialBackground | peasant ⓘ |
| spouse | Maria Palaiologina Kantakouzene ⓘ |
| successor | George I Terter ⓘ |
| title |
Emperor of the Bulgarians
ⓘ
linked to:
Tsar of Bulgaria
Tsar ⓘ |
| uprisingType | peasant uprising ⓘ |
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: Ivailo Description of subject: Ivailo was a 13th-century Bulgarian peasant leader who led a popular uprising and briefly ruled as Tsar of Bulgaria.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Bulgarian Tsar Constantine Tikh Asen
linked to: Ivailo