Gaius Cassius Longinus
E197826
Gaius Cassius Longinus was a Roman senator and leading instigator of the conspiracy that assassinated Julius Caesar in 44 BC.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Gaius Cassius Longinus canonical | 33 |
| Cassius | 2 |
| Cassius (Roman gens, probable) | 1 |
| Cassius Longinus | 1 |
| Cassius Longinus (jurist) | 1 |
| Gaius Cassius Longinus (assassin of Julius Caesar) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1704066 — 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: Gaius Cassius Longinus Context triple: [Julius Caesar, opposedBy, Gaius Cassius Longinus]
-
A.
Marcus Junius Brutus
Marcus Junius Brutus was a Roman senator best known as one of the leading conspirators in the assassination of Julius Caesar in 44 BC.
-
B.
Cato the Younger
Cato the Younger was a Roman statesman and Stoic philosopher renowned for his incorruptible integrity and staunch opposition to Julius Caesar’s rise to power.
-
C.
Mark Antony
Mark Antony was a prominent Roman general and statesman, ally of Julius Caesar and lover of Cleopatra, whose power struggle with Octavian culminated in his defeat at the Battle of Actium.
-
D.
Catiline
Catiline was a Roman senator best known for leading a failed conspiracy to overthrow the Roman Republic in 63 BCE.
-
E.
Brutus
Brutus was a Dutch warship that was captured by the British Royal Navy during the 1797 Battle of Camperdown in the French Revolutionary Wars.
- 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: Gaius Cassius Longinus Target entity description: Gaius Cassius Longinus was a Roman senator and leading instigator of the conspiracy that assassinated Julius Caesar in 44 BC.
-
A.
Marcus Junius Brutus
Marcus Junius Brutus was a Roman senator best known as one of the leading conspirators in the assassination of Julius Caesar in 44 BC.
-
B.
Cato the Younger
Cato the Younger was a Roman statesman and Stoic philosopher renowned for his incorruptible integrity and staunch opposition to Julius Caesar’s rise to power.
-
C.
Mark Antony
Mark Antony was a prominent Roman general and statesman, ally of Julius Caesar and lover of Cleopatra, whose power struggle with Octavian culminated in his defeat at the Battle of Actium.
-
D.
Catiline
Catiline was a Roman senator best known for leading a failed conspiracy to overthrow the Roman Republic in 63 BCE.
-
E.
Brutus
Brutus was a Dutch warship that was captured by the British Royal Navy during the 1797 Battle of Camperdown in the French Revolutionary Wars.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
Roman general
ⓘ
Roman politician ⓘ Roman senator ⓘ assassin ⓘ historical figure ⓘ |
| allyOf | Marcus Junius Brutus ⓘ |
| associatedWith |
Ides of March
ⓘ
Liberatores ⓘ |
| birthName | Gaius Cassius Longinus ⓘ |
| characterization | depicted as manipulative and politically shrewd in later literature ⓘ |
| citizenship | Roman Republic ⓘ |
| conspiredWith |
Decimus Junius Brutus Albinus
ⓘ
Marcus Junius Brutus ⓘ other Roman senators ⓘ |
| deathCause | suicide ⓘ |
| diedIn | Battle of Philippi ⓘ |
| enemyOf |
Mark Antony
ⓘ
Octavian ⓘ
linked to:
Augustus
|
| era | late Roman Republic ⓘ |
| familyConnection | brother-in-law of Marcus Junius Brutus ⓘ |
| historicalPeriod | 1st century BC ⓘ |
| ideology | republicanism ⓘ |
| knownFor |
leading instigator of the conspiracy to assassinate Julius Caesar
ⓘ
participation in the assassination of Julius Caesar on the Ides of March 44 BC ⓘ |
| languageSpoken | Latin ⓘ |
| legacy | remembered as one of Caesar's chief assassins ⓘ |
| memberOf | Roman Senate ⓘ |
| militaryCommand | Roman forces in Syria ⓘ |
| militaryRank | legatus ⓘ |
| notableEvent |
commanded forces of the Liberators in the East
ⓘ
helped plan the assassination of Julius Caesar in 44 BC ⓘ |
| notableFor | leadership among the Liberatores ⓘ |
| occupation |
conspirator
ⓘ
military commander ⓘ senator ⓘ |
| opposed |
Julius Caesar
ⓘ
dictatorship of Julius Caesar ⓘ
linked to:
Gaius Julius Caesar
|
| participatedIn |
Battle of Philippi
ⓘ
Liberators' civil war ⓘ
linked to:
Liberators’ civil war
assassination of Julius Caesar ⓘ |
| portrayedIn |
William Shakespeare's play "Julius Caesar"
ⓘ
linked to:
Julius Caesar (play)
|
| positionHeld |
Roman senator
ⓘ
governor of Syria ⓘ praetor ⓘ |
| roleInEvent | principal organizer of the plot against Julius Caesar ⓘ |
| spouse | Junia Tertia ⓘ |
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: Gaius Cassius Longinus Description of subject: Gaius Cassius Longinus was a Roman senator and leading instigator of the conspiracy that assassinated Julius Caesar in 44 BC.
Referenced by (39)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Gaius Cassius Longinus
linked to: Gaius Cassius Longinus
linked to: Gaius Cassius Longinus
linked to: Gaius Cassius Longinus
subject linked to:
war of the Liberators
linked to: Gaius Cassius Longinus