King Gelon II of Syracuse
E620686
King Gelon II of Syracuse was a 3rd-century BC ruler of the Sicilian city-state of Syracuse, known as a patron of learning and the dedicatee of Archimedes’ work *The Sand Reckoner*.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Gelon II of Syracuse | 1 |
| King Gelon II of Syracuse canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6802121 — 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: King Gelon II of Syracuse Context triple: [The Sand Reckoner, dedicatedTo, King Gelon II of Syracuse]
-
A.
Hieron II of Syracuse
Hieron II of Syracuse was a 3rd-century BC king and military leader who stabilized and enriched Syracuse through shrewd alliances, notably with Rome, and extensive public works.
-
B.
Hieron I of Syracuse
Hieron I of Syracuse was a powerful 5th-century BCE tyrant of Syracuse known for his military successes, political influence in Magna Graecia, and patronage of prominent poets such as Pindar and Aeschylus.
-
C.
Dionysius I of Syracuse
Dionysius I of Syracuse was a powerful 4th-century BCE tyrant of Syracuse known for his military campaigns against Carthage and his transformation of the city into a major Mediterranean power.
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D.
Gelon of Gela
Gelon of Gela was a powerful early 5th-century BC Greek tyrant who rose to rule both Gela and Syracuse, playing a major role in Sicilian and wider Greek politics during the Persian Wars era.
-
E.
Dionysius II of Syracuse
Dionysius II of Syracuse was a 4th-century BC tyrant of Syracuse whose troubled and often ineffectual rule contrasted with that of his powerful father and led to political instability and eventual exile.
- 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: King Gelon II of Syracuse Target entity description: King Gelon II of Syracuse was a 3rd-century BC ruler of the Sicilian city-state of Syracuse, known as a patron of learning and the dedicatee of Archimedes’ work *The Sand Reckoner*.
-
A.
Hieron II of Syracuse
Hieron II of Syracuse was a 3rd-century BC king and military leader who stabilized and enriched Syracuse through shrewd alliances, notably with Rome, and extensive public works.
-
B.
Hieron I of Syracuse
Hieron I of Syracuse was a powerful 5th-century BCE tyrant of Syracuse known for his military successes, political influence in Magna Graecia, and patronage of prominent poets such as Pindar and Aeschylus.
-
C.
Dionysius I of Syracuse
Dionysius I of Syracuse was a powerful 4th-century BCE tyrant of Syracuse known for his military campaigns against Carthage and his transformation of the city into a major Mediterranean power.
-
D.
Gelon of Gela
Gelon of Gela was a powerful early 5th-century BC Greek tyrant who rose to rule both Gela and Syracuse, playing a major role in Sicilian and wider Greek politics during the Persian Wars era.
-
E.
Dionysius II of Syracuse
Dionysius II of Syracuse was a 4th-century BC tyrant of Syracuse whose troubled and often ineffectual rule contrasted with that of his powerful father and led to political instability and eventual exile.
- F. None of above. chosen
Statements (37)
| Predicate | Object |
|---|---|
| instanceOf |
Hellenistic ruler
ⓘ
human ⓘ king ⓘ |
| associatedWithWorkBy | Archimedes NERFINISHED ⓘ |
| continent | Europe ⓘ |
| country | Syracuse NERFINISHED ⓘ |
| culture | Greek ⓘ |
| dedicateeOf | The Sand Reckoner NERFINISHED ⓘ |
| era | Hellenistic period ⓘ |
| ethnicGroup | Greek people ⓘ |
| fieldOfActivity |
politics
ⓘ
royal court patronage ⓘ |
| gender | male ⓘ |
| governed | Syracuse NERFINISHED ⓘ |
| hasAssociate | Archimedes NERFINISHED ⓘ |
| knownFor |
being a patron of learning
ⓘ
being dedicatee of Archimedes’ The Sand Reckoner ⓘ |
| language | Ancient Greek ⓘ |
| locatedInTime | 3rd century BC ⓘ |
| name |
Gelon II of Syracuse
NERFINISHED
ⓘ
King Gelon II of Syracuse NERFINISHED ⓘ |
| notableFigureIn |
history of mathematics
ⓘ
history of science ⓘ |
| notableWorkDedicatedToHim | The Sand Reckoner NERFINISHED ⓘ |
| partOf |
Hellenistic Sicily
NERFINISHED
ⓘ
history of Syracuse ⓘ |
| patronOf |
learning
ⓘ
mathematics ⓘ philosophy ⓘ science ⓘ |
| patronOfPerson | Archimedes NERFINISHED ⓘ |
| positionHeld | king of Syracuse ⓘ |
| realm | Syracuse NERFINISHED ⓘ |
| regionRuled | Sicily NERFINISHED ⓘ |
| religion | Ancient Greek religion ⓘ |
| residence | Syracuse NERFINISHED ⓘ |
| typeOfMonarch | city-state ruler ⓘ |
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: King Gelon II of Syracuse Description of subject: King Gelon II of Syracuse was a 3rd-century BC ruler of the Sicilian city-state of Syracuse, known as a patron of learning and the dedicatee of Archimedes’ work *The Sand Reckoner*.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Gelon II of Syracuse