Battle of Ephesus (c. 258 BC)
E730028
The Battle of Ephesus (c. 258 BC) was a major Hellenistic naval clash during the Second Syrian War in which the Ptolemaic fleet suffered a decisive defeat by the Seleucid navy, shifting maritime dominance in the eastern Mediterranean.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Battle of Ephesus (c. 258 BC) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8385591 — 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 Ephesus (c. 258 BC) Context triple: [Ptolemaic navy, notableEngagement, Battle of Ephesus (c. 258 BC)]
-
A.
Battle of Antioch (145 BCE)
The Battle of Antioch (145 BCE) was a decisive Hellenistic-era clash near the Seleucid capital that helped determine control of the Seleucid Empire during the later stages of the Syrian Wars.
-
B.
Battle of Chaeronea (First Mithridatic War)
The Battle of Chaeronea (First Mithridatic War) was a decisive 86 BC engagement in Greece where Roman forces under Lucius Cornelius Sulla crushed the army of Mithridates VI of Pontus, securing Roman dominance in the region.
-
C.
Battle of Kyzikos (c. 677)
The Battle of Kyzikos (c. 677) was a major naval engagement in which the Byzantine fleet decisively defeated the Arab forces during the First Arab–Byzantine War, helping to secure imperial control in the Sea of Marmara.
-
D.
Battle of Ecnomus
The Battle of Ecnomus was a major naval engagement of the First Punic War in 256 BC, often considered one of the largest naval battles of antiquity, in which Rome decisively defeated Carthage off the southern coast of Sicily.
-
E.
Battle of Versinikia
The Battle of Versinikia was a decisive 813 AD clash between the Byzantine Empire and the First Bulgarian Empire that led to a major Bulgarian victory and paved the way for the siege of Constantinople.
- 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 Ephesus (c. 258 BC) Target entity description: The Battle of Ephesus (c. 258 BC) was a major Hellenistic naval clash during the Second Syrian War in which the Ptolemaic fleet suffered a decisive defeat by the Seleucid navy, shifting maritime dominance in the eastern Mediterranean.
-
A.
Battle of Antioch (145 BCE)
The Battle of Antioch (145 BCE) was a decisive Hellenistic-era clash near the Seleucid capital that helped determine control of the Seleucid Empire during the later stages of the Syrian Wars.
-
B.
Battle of Chaeronea (First Mithridatic War)
The Battle of Chaeronea (First Mithridatic War) was a decisive 86 BC engagement in Greece where Roman forces under Lucius Cornelius Sulla crushed the army of Mithridates VI of Pontus, securing Roman dominance in the region.
-
C.
Battle of Kyzikos (c. 677)
The Battle of Kyzikos (c. 677) was a major naval engagement in which the Byzantine fleet decisively defeated the Arab forces during the First Arab–Byzantine War, helping to secure imperial control in the Sea of Marmara.
-
D.
Battle of Ecnomus
The Battle of Ecnomus was a major naval engagement of the First Punic War in 256 BC, often considered one of the largest naval battles of antiquity, in which Rome decisively defeated Carthage off the southern coast of Sicily.
-
E.
Battle of Versinikia
The Battle of Versinikia was a decisive 813 AD clash between the Byzantine Empire and the First Bulgarian Empire that led to a major Bulgarian victory and paved the way for the siege of Constantinople.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf | naval battle ⓘ |
| belligerent |
Ptolemaic Kingdom
NERFINISHED
ⓘ
Seleucid Empire NERFINISHED ⓘ |
| combatant |
Ptolemaic Kingdom
NERFINISHED
ⓘ
Seleucid Empire NERFINISHED ⓘ |
| conflictOf | Second Syrian War NERFINISHED ⓘ |
| conflictType | Hellenistic naval clash ⓘ |
| consequence | shift in maritime dominance in the eastern Mediterranean toward the Seleucid Empire ⓘ |
| era | Hellenistic period NERFINISHED ⓘ |
| hasApproximateDate | c. 258 BC ⓘ |
| hasApproximateYear | 258 BC ⓘ |
| hasBelligerentSide |
Ptolemaic side
ⓘ
Seleucid side ⓘ |
| hasCentury | 3rd century BC ⓘ |
| hasLocation |
Aegean Sea
NERFINISHED
ⓘ
near Ephesus ⓘ |
| hasRegion | eastern Mediterranean ⓘ |
| historicalContext | struggle for control of the eastern Mediterranean between Hellenistic successor states ⓘ |
| involves |
Ptolemaic navy
NERFINISHED
ⓘ
Seleucid navy NERFINISHED ⓘ |
| isMajorEngagementIn | Second Syrian War NERFINISHED ⓘ |
| isPartOf | wars of the Diadochi legacy conflicts ⓘ |
| namedAfter | Ephesus NERFINISHED ⓘ |
| navalTheater | Aegean Sea NERFINISHED ⓘ |
| opponentOf |
Ptolemaic Kingdom
NERFINISHED
ⓘ
Seleucid Empire NERFINISHED ⓘ |
| outcome | decisive defeat of the Ptolemaic fleet ⓘ |
| partOf | Second Syrian War NERFINISHED ⓘ |
| result | Seleucid victory ⓘ |
| significance | altered balance of naval power between Ptolemaic and Seleucid states ⓘ |
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 Ephesus (c. 258 BC) Description of subject: The Battle of Ephesus (c. 258 BC) was a major Hellenistic naval clash during the Second Syrian War in which the Ptolemaic fleet suffered a decisive defeat by the Seleucid navy, shifting maritime dominance in the eastern Mediterranean.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.