Portsmouth Harbor
E274852
Portsmouth Harbor is a historic deep-water port on the Atlantic coast of New Hampshire and Maine, known for its naval shipyard, maritime commerce, and strategic military significance.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Portsmouth Harbor canonical | 23 |
| Portsmouth Harbor (via Piscataqua River) | 1 |
| Portsmouth harbor | 1 |
| Portsmouth waterfront area | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2506405 — 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: Portsmouth Harbor Context triple: [Piscataqua River, hasPort, Portsmouth Harbor]
-
A.
Plymouth Harbor
Plymouth Harbor is a historic natural harbor on the Atlantic coast of Massachusetts, best known as the landing site of the Pilgrims in 1620 and a focal point of early colonial New England.
-
B.
Salem Harbor
Salem Harbor is a historic seaport in Salem, Massachusetts, that played a major role in early American maritime trade and privateering.
-
C.
Falmouth Harbor
Falmouth Harbor is a coastal harbor in Falmouth, Massachusetts, known for its recreational boating, fishing activities, and access to Vineyard Sound.
-
D.
Gloucester Harbor
Gloucester Harbor is a historic fishing and commercial harbor on the Atlantic coast of Massachusetts, central to the maritime economy and culture of the city of Gloucester.
-
E.
Nantucket Harbor
Nantucket Harbor is a sheltered, historically significant harbor on the island of Nantucket, Massachusetts, known for its maritime heritage, boating, and scenic waterfront.
- 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: Portsmouth Harbor Target entity description: Portsmouth Harbor is a historic deep-water port on the Atlantic coast of New Hampshire and Maine, known for its naval shipyard, maritime commerce, and strategic military significance.
-
A.
Plymouth Harbor
Plymouth Harbor is a historic natural harbor on the Atlantic coast of Massachusetts, best known as the landing site of the Pilgrims in 1620 and a focal point of early colonial New England.
-
B.
Salem Harbor
Salem Harbor is a historic seaport in Salem, Massachusetts, that played a major role in early American maritime trade and privateering.
-
C.
Falmouth Harbor
Falmouth Harbor is a coastal harbor in Falmouth, Massachusetts, known for its recreational boating, fishing activities, and access to Vineyard Sound.
-
D.
Gloucester Harbor
Gloucester Harbor is a historic fishing and commercial harbor on the Atlantic coast of Massachusetts, central to the maritime economy and culture of the city of Gloucester.
-
E.
Nantucket Harbor
Nantucket Harbor is a sheltered, historically significant harbor on the island of Nantucket, Massachusetts, known for its maritime heritage, boating, and scenic waterfront.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
harbor
ⓘ
port ⓘ |
| adjacentCity | Portsmouth, New Hampshire ⓘ |
| adjacentTown | Kittery, Maine ⓘ |
| administeredBy |
State of Maine
ⓘ
linked to:
Maine
State of New Hampshire ⓘ
linked to:
New Hampshire
|
| climate | humid continental climate ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| economicActivity |
fishing industry
ⓘ
shipping ⓘ tourism ⓘ |
| hasPart |
Fort Constitution
ⓘ
Fort Foster ⓘ Fort McClary ⓘ New Castle, New Hampshire ⓘ Portsmouth Naval Shipyard ⓘ Seavey Island ⓘ Whaleback Lighthouse ⓘ |
| historicalEra |
American Civil War
ⓘ
American Revolutionary War ⓘ Colonial era ⓘ War of 1812 ⓘ World War I ⓘ World War II ⓘ |
| jurisdictionIncludes | U.S. federal waters ⓘ |
| knownFor |
historic seaport activity
ⓘ
maritime commerce ⓘ naval shipbuilding ⓘ strategic military significance ⓘ |
| locatedIn |
Maine
ⓘ
New Hampshire ⓘ |
| locatedOn |
Atlantic Ocean
ⓘ
Piscataqua River ⓘ |
| navigationAid |
channel markers
ⓘ
lighthouses ⓘ |
| nearbyLandmark |
Isles of Shoals
ⓘ
Portsmouth Harbor Light ⓘ
linked to:
Portsmouth Harbor Lighthouse
Portsmouth Naval Shipyard Historic District ⓘ
linked to:
Portsmouth Naval Shipyard
|
| region | New England ⓘ |
| strategicRole |
coastal defense
ⓘ
naval shipyard support ⓘ submarine construction and maintenance ⓘ |
| usedFor |
commercial shipping
ⓘ
fishing ⓘ naval operations ⓘ recreational boating ⓘ |
| waterType | saltwater estuary ⓘ |
| waterwayFunction | deep-water port ⓘ |
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: Portsmouth Harbor Description of subject: Portsmouth Harbor is a historic deep-water port on the Atlantic coast of New Hampshire and Maine, known for its naval shipyard, maritime commerce, and strategic military significance.
Referenced by (26)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Portsmouth Harbor
linked to: Portsmouth Harbor
subject linked to:
Fort McClary (nearby in Maine)
subject linked to:
Fort McClary (nearby in Maine)
linked to: Portsmouth Harbor