Magnentius
E257024
Magnentius was a Roman usurper and military commander who seized control of much of the Western Roman Empire in the mid-4th century before being defeated by Emperor Constantius II.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Magnentius canonical | 8 |
| Flavius Magnus Magnentius | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2177593 — 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: Magnentius Context triple: [Constantius II, opponent, Magnentius]
-
A.
Constantine III
Constantine III was a late Roman general who declared himself Western Roman Emperor in Britain in 407 AD, briefly controlling much of Gaul and Hispania before being defeated and executed.
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B.
Majorian
Majorian was a 5th-century Western Roman emperor noted for his energetic but ultimately unsuccessful efforts to restore the crumbling empire through military campaigns and administrative reforms.
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C.
Olybrius
Olybrius was a short-lived 5th-century Western Roman emperor whose brief reign in 472 occurred during the empire’s final period of political fragmentation and decline.
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D.
Jovinus
Jovinus was a Roman usurper who briefly claimed the imperial title in Gaul during the early 5th century Western Roman Empire.
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E.
Maxentius
Maxentius was a Roman emperor who ruled Italy and Africa in the early 4th century and was famously defeated by Constantine the Great at the Battle of the Milvian Bridge.
- 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: Magnentius Target entity description: Magnentius was a Roman usurper and military commander who seized control of much of the Western Roman Empire in the mid-4th century before being defeated by Emperor Constantius II.
-
A.
Constantine III
Constantine III was a late Roman general who declared himself Western Roman Emperor in Britain in 407 AD, briefly controlling much of Gaul and Hispania before being defeated and executed.
-
B.
Majorian
Majorian was a 5th-century Western Roman emperor noted for his energetic but ultimately unsuccessful efforts to restore the crumbling empire through military campaigns and administrative reforms.
-
C.
Olybrius
Olybrius was a short-lived 5th-century Western Roman emperor whose brief reign in 472 occurred during the empire’s final period of political fragmentation and decline.
-
D.
Jovinus
Jovinus was a Roman usurper who briefly claimed the imperial title in Gaul during the early 5th century Western Roman Empire.
-
E.
Maxentius
Maxentius was a Roman emperor who ruled Italy and Africa in the early 4th century and was famously defeated by Constantine the Great at the Battle of the Milvian Bridge.
- F. None of above. chosen
Statements (42)
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: Magnentius Description of subject: Magnentius was a Roman usurper and military commander who seized control of much of the Western Roman Empire in the mid-4th century before being defeated by Emperor Constantius II.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Flavius Magnus Magnentius