Trajan
E13462
Trajan was a highly esteemed Roman emperor known for expanding the empire to its greatest territorial extent and overseeing a period of military success and public building projects.
All labels observed (12)
How this entity was disambiguated
This entity first appeared as the object of triple T62421 — 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: Trajan Context triple: [Roman Empire, notableEmperor, Trajan]
-
A.
Vespasian
Vespasian was a 1st-century Roman emperor best known for restoring stability after Nero’s reign and initiating major building projects such as the Colosseum.
-
B.
Tiberius
Tiberius was the second Roman emperor, ruling from AD 14 to 37, known for his capable early administration and later reclusive, often harsh governance.
-
C.
Augustus
Augustus was the first Roman emperor, who established the Roman Empire and led a period of relative peace and prosperity known as the Pax Romana.
-
D.
Nero
Nero was a 1st-century Roman emperor best known for his tyrannical rule, persecution of Christians, and association with the Great Fire of Rome.
-
E.
Julius
Julius is the first given name of J. Robert Oppenheimer, the American theoretical physicist known as the "father of the atomic bomb."
- 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: Trajan Target entity description: Trajan was a highly esteemed Roman emperor known for expanding the empire to its greatest territorial extent and overseeing a period of military success and public building projects.
-
A.
Vespasian
Vespasian was a 1st-century Roman emperor best known for restoring stability after Nero’s reign and initiating major building projects such as the Colosseum.
-
B.
Tiberius
Tiberius was the second Roman emperor, ruling from AD 14 to 37, known for his capable early administration and later reclusive, often harsh governance.
-
C.
Augustus
Augustus was the first Roman emperor, who established the Roman Empire and led a period of relative peace and prosperity known as the Pax Romana.
-
D.
Nero
Nero was a 1st-century Roman emperor best known for his tyrannical rule, persecution of Christians, and association with the Great Fire of Rome.
-
E.
Julius
Julius is the first given name of J. Robert Oppenheimer, the American theoretical physicist known as the "father of the atomic bomb."
- F. None of above. chosen
Statements (55)
| Predicate | Object |
|---|---|
| instanceOf |
Roman consul
ⓘ
Roman emperor ⓘ Roman general ⓘ deified Roman ⓘ member of the Nerva–Antonine dynasty ⓘ |
| adoptedBy | Nerva ⓘ |
| associatedWith | Pliny the Younger ⓘ |
| birthDate | 53-09-18 ⓘ |
| birthPlace |
Andalusia
ⓘ
surface form:
Hispania Baetica
Italica ⓘ Roman Empire ⓘ |
| burialPlace |
Rome
ⓘ
Trajan's Column ⓘ |
| cognomen |
Trajan
self-linksurface differs
ⓘ
surface form:
Traianus
|
| conqueredTerritory |
Romania
ⓘ
surface form:
Dacia
Nabataean kingdom ⓘ
surface form:
Nabataean Kingdom
parts of Mesopotamia ⓘ |
| constructed |
Puente de Alcántara
ⓘ
surface form:
Alcántara Bridge
Port of Ostia (Portus Traiani) ⓘ Trajan's Column ⓘ Trajan's Forum ⓘ Trajan's Forum ⓘ
surface form:
Trajan's Market
|
| correspondence | Pliny the Younger ⓘ |
| deathDate | 117-08-08 ⓘ |
| deathPlace |
Asia Minor
ⓘ
Selinus in Cilicia ⓘ |
| deifiedBy | Roman Senate ⓘ |
| dynasty | Nerva–Antonine dynasty ⓘ |
| era | Principate ⓘ |
| father | Marcus Ulpius Traianus the Elder ⓘ |
| fullName |
Trajan
self-linksurface differs
ⓘ
surface form:
Marcus Ulpius Traianus
|
| heldOffice |
consul
ⓘ
governor of Germania Inferior ⓘ governor of Hispania Tarraconensis ⓘ |
| honorificTitle |
Imperator
ⓘ
surface form:
Optimus Princeps
|
| knownFor |
Dacian Wars
ⓘ
annexation of Arabia Petraea ⓘ campaigns against Parthia ⓘ expanding the Roman Empire to its greatest territorial extent ⓘ extensive public building programs ⓘ successful military campaigns ⓘ |
| legacy | model of a good emperor in later Roman thought ⓘ |
| militaryRank |
general
ⓘ
legatus ⓘ |
| mother | Marcia ⓘ |
| nomen | Ulpius ⓘ |
| policy | moderate treatment of Christians ⓘ |
| praenomen | Marcus ⓘ |
| predecessor | Nerva ⓘ |
| reignEnd | 117 ⓘ |
| reignStart | 98 ⓘ |
| religion | Roman polytheism ⓘ |
| spouse | Pompeia Plotina ⓘ |
| successor | Hadrian ⓘ |
| title |
Trajan
self-linksurface differs
ⓘ
surface form:
Imperator Caesar Nerva Traianus Divi Nervae filius Augustus
|
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: Trajan Description of subject: Trajan was a highly esteemed Roman emperor known for expanding the empire to its greatest territorial extent and overseeing a period of military success and public building projects.
Referenced by (161)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Emperor Trajan
this entity surface form:
Roman Emperor Trajan
subject surface form:
Trajan
this entity surface form:
Marcus Ulpius Traianus
subject surface form:
Arabia Petraea
this entity surface form:
Emperor Trajan
this entity surface form:
Emperor Trajan
this entity surface form:
Emperor Trajan
this entity surface form:
Emperor Trajan
subject surface form:
Basilica Ulpia
this entity surface form:
Emperor Trajan
subject surface form:
Basilica Ulpia
this entity surface form:
Marcus Ulpius Traianus
this entity surface form:
Marcus Ulpius Traianus
this entity surface form:
Emperor Trajan
this entity surface form:
Emperor Trajan
this entity surface form:
Emperor Trajan
this entity surface form:
Marcus Ulpius Traianus
subject surface form:
Gaius Plinius Caecilius Secundus
this entity surface form:
Emperor Trajan
this entity surface form:
Emperor Trajan
this entity surface form:
Emperor Trajan
subject surface form:
Arch of Trajan (Ancona)
subject surface form:
Arch of Trajan (Ancona)
this entity surface form:
Emperor Trajan
subject surface form:
Arch of Trajan (Ancona)
subject surface form:
Arch of Trajan (Ancona)
this entity surface form:
Roman Emperor Trajan
this entity surface form:
Emperor Trajan