Port of Ostia (Portus Traiani)
E70336
The Port of Ostia, known as Portus Traiani, was a major artificial harbor complex of ancient Rome that expanded the city’s maritime capacity and became a crucial hub for Mediterranean trade and grain imports.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Portus | 2 |
| Port of Ostia (Portus Traiani) canonical | 1 |
| Portus Traiani | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T561598 — 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: Port of Ostia (Portus Traiani) Context triple: [Trajan, constructed, Port of Ostia (Portus Traiani)]
-
A.
Castel Sant'Angelo
Castel Sant'Angelo is a towering cylindrical fortress and former mausoleum on the banks of the Tiber in Rome, renowned for its rich history, papal apartments, and panoramic views of the city.
-
B.
Roman Forum
The Roman Forum is an ancient public square in the heart of Rome that served as the political, religious, and commercial center of the Roman Empire.
-
C.
Portici
Portici is a coastal town near Naples in southern Italy, historically known as a Bourbon royal residence and cultural center in the Kingdom of Naples.
-
D.
Parco archeologico del Colosseo
Parco archeologico del Colosseo is an Italian archaeological park and public institution responsible for preserving and managing Rome’s central ancient monuments, including the Colosseum and its surrounding historic area.
-
E.
Arch of Titus
The Arch of Titus is an ancient Roman triumphal arch in the Roman Forum, commemorating Emperor Titus’s victory in the Jewish War and famed for its reliefs depicting the spoils from the Second Temple in Jerusalem.
- 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: Port of Ostia (Portus Traiani) Target entity description: The Port of Ostia, known as Portus Traiani, was a major artificial harbor complex of ancient Rome that expanded the city’s maritime capacity and became a crucial hub for Mediterranean trade and grain imports.
-
A.
Castel Sant'Angelo
Castel Sant'Angelo is a towering cylindrical fortress and former mausoleum on the banks of the Tiber in Rome, renowned for its rich history, papal apartments, and panoramic views of the city.
-
B.
Roman Forum
The Roman Forum is an ancient public square in the heart of Rome that served as the political, religious, and commercial center of the Roman Empire.
-
C.
Portici
Portici is a coastal town near Naples in southern Italy, historically known as a Bourbon royal residence and cultural center in the Kingdom of Naples.
-
D.
Parco archeologico del Colosseo
Parco archeologico del Colosseo is an Italian archaeological park and public institution responsible for preserving and managing Rome’s central ancient monuments, including the Colosseum and its surrounding historic area.
-
E.
Arch of Titus
The Arch of Titus is an ancient Roman triumphal arch in the Roman Forum, commemorating Emperor Titus’s victory in the Jewish War and famed for its reliefs depicting the spoils from the Second Temple in Jerusalem.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
ancient Roman harbor
ⓘ
archaeological site ⓘ artificial harbor ⓘ |
| administrativeRegion | Lazio ⓘ |
| alsoKnownAs |
Portus
ⓘ
linked to:
Port of Ostia (Portus Traiani)
Portus Traiani ⓘ
linked to:
Port of Ostia (Portus Traiani)
|
| builtEnvironment |
harbor basins excavated inland
ⓘ
large storage complexes ⓘ massive masonry quays ⓘ |
| connectedTo |
city of Rome via the Tiber River
ⓘ
road network of central Italy ⓘ |
| constructedUnder |
Emperor Claudius
ⓘ
linked to:
Claudius
|
| constructionStart | reign of Claudius ⓘ |
| country | Roman Empire ⓘ |
| currentStatus |
archaeological area
ⓘ
tourist attraction ⓘ |
| declineReason |
changes in coastline
ⓘ
political and economic crisis of Late Antiquity ⓘ silting ⓘ |
| designedTo |
increase Rome’s maritime capacity
ⓘ
provide safer anchorage than the Tiber mouth ⓘ |
| distanceToRome | about 25 kilometers ⓘ |
| era |
Imperial Rome
ⓘ
linked to:
Roman Empire
|
| expandedUnder |
Emperor Trajan
ⓘ
linked to:
Trajan
|
| function |
Mediterranean trade hub
ⓘ
grain import hub ⓘ seaport of Rome ⓘ |
| hasPart |
breakwaters
ⓘ
canals connecting to the Tiber ⓘ docks ⓘ hexagonal basin ⓘ lighthouses ⓘ outer basins ⓘ warehouses ⓘ |
| locatedIn | Italy ⓘ |
| locatedNear |
Ostia
ⓘ
Rome ⓘ mouth of the Tiber River ⓘ |
| locatedOn | Tyrrhenian Sea ⓘ |
| majorExpansion | reign of Trajan ⓘ |
| namedAfter | Trajan ⓘ |
| nearbySite |
Ostia Antica
ⓘ
linked to:
Ostia Antica archaeological site
|
| peakUsage |
1st century AD
ⓘ
2nd century AD ⓘ |
| precededBy | river harbor of Ostia at the Tiber mouth ⓘ |
| primaryImports |
grain from Egypt
ⓘ
grain from North Africa ⓘ |
| significance |
crucial for supplying Rome’s population
ⓘ
key node in Mediterranean trade routes ⓘ |
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: Port of Ostia (Portus Traiani) Description of subject: The Port of Ostia, known as Portus Traiani, was a major artificial harbor complex of ancient Rome that expanded the city’s maritime capacity and became a crucial hub for Mediterranean trade and grain imports.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Port of Ostia (Portus Traiani)
linked to: Port of Ostia (Portus Traiani)
linked to: Port of Ostia (Portus Traiani)