Harbor Defenses of Portland
E1557511
UNEXPLORED
Harbor Defenses of Portland were a network of U.S. coastal fortifications and artillery installations that protected the approaches to Portland, Maine, particularly during the late 19th and early 20th centuries.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Harbor Defenses of Portland canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T22823192 — 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: Harbor Defenses of Portland Context triple: [Fort Williams, partOf, Harbor Defenses of Portland]
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A.
Harbor Defenses of Portsmouth
Harbor Defenses of Portsmouth were a network of coastal fortifications and military installations that protected the strategic harbor area around Portsmouth, New Hampshire, particularly during the 19th and 20th centuries.
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B.
Harbor Defenses of the Columbia
Harbor Defenses of the Columbia was a U.S. Army coastal defense command responsible for protecting the mouth of the Columbia River and nearby coastal areas through a network of forts and artillery installations.
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C.
Portland Breakwater Fort
Portland Breakwater Fort is a 19th-century coastal artillery fort in Dorset, England, built on the breakwater of Portland Harbour to protect the naval anchorage.
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D.
Boston Harbor defenses
Boston Harbor defenses were a network of coastal fortifications and military installations designed to protect Boston Harbor and the city of Boston from naval attack.
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E.
Fort Arnold
Fort Arnold was a key Revolutionary War fortification overlooking the Hudson River at West Point, later renamed Fort Clinton after Benedict Arnold’s attempted betrayal.
- 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: Harbor Defenses of Portland Target entity description: Harbor Defenses of Portland were a network of U.S. coastal fortifications and artillery installations that protected the approaches to Portland, Maine, particularly during the late 19th and early 20th centuries.
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A.
Harbor Defenses of Portsmouth
Harbor Defenses of Portsmouth were a network of coastal fortifications and military installations that protected the strategic harbor area around Portsmouth, New Hampshire, particularly during the 19th and 20th centuries.
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B.
Harbor Defenses of the Columbia
Harbor Defenses of the Columbia was a U.S. Army coastal defense command responsible for protecting the mouth of the Columbia River and nearby coastal areas through a network of forts and artillery installations.
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C.
Portland Breakwater Fort
Portland Breakwater Fort is a 19th-century coastal artillery fort in Dorset, England, built on the breakwater of Portland Harbour to protect the naval anchorage.
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D.
Boston Harbor defenses
Boston Harbor defenses were a network of coastal fortifications and military installations designed to protect Boston Harbor and the city of Boston from naval attack.
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E.
Fort Arnold
Fort Arnold was a key Revolutionary War fortification overlooking the Hudson River at West Point, later renamed Fort Clinton after Benedict Arnold’s attempted betrayal.
- F. None of above. chosen
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.