Battle of Magnesia
E352156
The Battle of Magnesia was a decisive 190 BC clash in Asia Minor in which Roman forces and their allies defeated the Seleucid king Antiochus III, marking a major shift of power in the Hellenistic world.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Battle of Magnesia canonical | 6 |
| Battle of Magnesia (190 BC) | 1 |
| Battle of Magnesia ad Sipylum | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3283361 — 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: Battle of Magnesia Context triple: [Antiochus III the Great, battle, Battle of Magnesia]
-
A.
Battle of Potidaea
The Battle of Potidaea was an early land and naval engagement between Athens and Corinthian-allied forces that helped spark and shape the opening phase of the Peloponnesian War.
-
B.
Battle of Issus
The Battle of Issus was a decisive 333 BC clash in which Alexander the Great defeated the Persian king Darius III, cementing Macedonian dominance in Asia Minor and showcasing Alexander’s tactical brilliance.
-
C.
Battle of Cnidus
The Battle of Cnidus was a decisive 394 BC naval engagement in which a Persian-backed fleet led by the Athenian Conon destroyed Spartan sea power, helping to end Sparta’s dominance in the Greek world.
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D.
Battle of Heraclea
The Battle of Heraclea was a major 280 BC clash in southern Italy where King Pyrrhus of Epirus defeated the Romans in one of the earliest and most famous engagements of the Pyrrhic War.
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E.
Battle of Gaugamela
The Battle of Gaugamela was a decisive 331 BC clash in which Alexander the Great defeated Persian king Darius III, effectively leading to the fall of the Achaemenid Empire and securing Macedonian dominance in the Near East.
- 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: Battle of Magnesia Target entity description: The Battle of Magnesia was a decisive 190 BC clash in Asia Minor in which Roman forces and their allies defeated the Seleucid king Antiochus III, marking a major shift of power in the Hellenistic world.
-
A.
Battle of Potidaea
The Battle of Potidaea was an early land and naval engagement between Athens and Corinthian-allied forces that helped spark and shape the opening phase of the Peloponnesian War.
-
B.
Battle of Issus
The Battle of Issus was a decisive 333 BC clash in which Alexander the Great defeated the Persian king Darius III, cementing Macedonian dominance in Asia Minor and showcasing Alexander’s tactical brilliance.
-
C.
Battle of Cnidus
The Battle of Cnidus was a decisive 394 BC naval engagement in which a Persian-backed fleet led by the Athenian Conon destroyed Spartan sea power, helping to end Sparta’s dominance in the Greek world.
-
D.
Battle of Heraclea
The Battle of Heraclea was a major 280 BC clash in southern Italy where King Pyrrhus of Epirus defeated the Romans in one of the earliest and most famous engagements of the Pyrrhic War.
-
E.
Battle of Gaugamela
The Battle of Gaugamela was a decisive 331 BC clash in which Alexander the Great defeated Persian king Darius III, effectively leading to the fall of the Achaemenid Empire and securing Macedonian dominance in the Near East.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
ancient battle
ⓘ
battle ⓘ |
| allyOfRome |
Eumenes II
ⓘ
surface form:
Eumenes II of Pergamon
Pergamon ⓘ |
| alsoKnownAs |
Battle of Magnesia
ⓘ
surface form:
Battle of Magnesia ad Sipylum
|
| belligerent |
Antiochus III the Great
ⓘ
Kingdom of Pergamon ⓘ Roman Republic ⓘ Seleucid Empire ⓘ |
| combatantStrength | Roman and allied forces outnumbered by Seleucid army ⓘ |
| commander |
Antiochus III the Great
ⓘ
Eumenes II ⓘ
surface form:
Eumenes II of Pergamon
Gnaeus Domitius Ahenobarbus ⓘ Lucius Cornelius Scipio Asiaticus ⓘ |
| conflictIn | Roman–Seleucid War ⓘ |
| consequence |
Treaty of Apamea
ⓘ
end of Seleucid influence in Asia Minor ⓘ expansion of Roman power in the eastern Mediterranean ⓘ territorial gains for Pergamon ⓘ |
| date | 190 BC ⓘ |
| era | 2nd century BC ⓘ |
| follows | Roman–Seleucid diplomatic disputes over Greece and Asia Minor ⓘ |
| historicalPeriod | Hellenistic period ⓘ |
| historicalSource |
Livy
ⓘ
Polybius ⓘ |
| locatedInPresentDay | Turkey ⓘ |
| location |
Asia Minor
ⓘ
near Magnesia ad Sipylum ⓘ near the Hermus River ⓘ |
| notableTactic |
Roman exploitation of gaps in the Seleucid phalanx
ⓘ
use of allied cavalry by Pergamon ⓘ |
| opponentOfRome | Antiochus III the Great ⓘ |
| outcome | defeat of Antiochus III ⓘ |
| partOf | Roman–Seleucid War ⓘ |
| precedes | Treaty of Apamea ⓘ |
| region |
Western Anatolia
ⓘ
surface form:
western Anatolia
|
| result | decisive Roman victory ⓘ |
| RomanArmyFeatures | legionary infantry ⓘ |
| SeleucidArmyFeatures |
phalanx infantry
ⓘ
war elephants ⓘ |
| SeleucidObligationAfterTreaty |
ceding of territories in Asia Minor
ⓘ
payment of large indemnity to Rome ⓘ reduction of Seleucid naval forces ⓘ |
| significance |
consolidated Roman influence in Asia Minor
ⓘ
major shift of power in the Hellenistic world ⓘ marked the decline of Seleucid power ⓘ |
| treatyImposed | Treaty of Apamea ⓘ |
| year | 190 BC ⓘ |
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: Battle of Magnesia Description of subject: The Battle of Magnesia was a decisive 190 BC clash in Asia Minor in which Roman forces and their allies defeated the Seleucid king Antiochus III, marking a major shift of power in the Hellenistic world.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Battle of Magnesia ad Sipylum
this entity surface form:
Battle of Magnesia (190 BC)