U.S. Custom House (Portland, Maine)
E471903
The U.S. Custom House in Portland, Maine is a grand 19th-century federal building designed in the Second Empire style, serving historically as a key center for customs and maritime trade administration.
All labels observed (2)
| Label | Occurrences |
|---|---|
| U.S. Custom House (Portland, Maine) canonical | 1 |
| U.S. Custom House, Portland, Maine | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4819136 — 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: U.S. Custom House (Portland, Maine) Context triple: [Alfred B. Mullett, notableWork, U.S. Custom House (Portland, Maine)]
-
A.
United States Custom House in Salem
The United States Custom House in Salem is a historic federal building and former customs office in Salem, Massachusetts, best known today for its association with author Nathaniel Hawthorne, who worked there and drew on it for the introduction to "The Scarlet Letter."
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B.
Customs House
Customs House is a historic waterfront building in Hobart, Tasmania, notable for its colonial architecture and former role in administering maritime trade and customs.
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C.
Customs House
Customs House is a historic neoclassical waterfront building on Shanghai’s Bund, long serving as a key symbol of the city’s colonial-era commercial and maritime trade.
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D.
United States Custom House
The United States Custom House is a historic federal building in New York City that once served as the primary customs collection point for the bustling port, reflecting the city’s central role in American trade and finance.
-
E.
Long Wharf Custom House Block
Long Wharf Custom House Block is a historic waterfront commercial building in Boston that once served as a key hub for maritime trade and customs operations.
- 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: U.S. Custom House (Portland, Maine) Target entity description: The U.S. Custom House in Portland, Maine is a grand 19th-century federal building designed in the Second Empire style, serving historically as a key center for customs and maritime trade administration.
-
A.
United States Custom House in Salem
The United States Custom House in Salem is a historic federal building and former customs office in Salem, Massachusetts, best known today for its association with author Nathaniel Hawthorne, who worked there and drew on it for the introduction to "The Scarlet Letter."
-
B.
Customs House
Customs House is a historic waterfront building in Hobart, Tasmania, notable for its colonial architecture and former role in administering maritime trade and customs.
-
C.
Customs House
Customs House is a historic neoclassical waterfront building on Shanghai’s Bund, long serving as a key symbol of the city’s colonial-era commercial and maritime trade.
-
D.
United States Custom House
The United States Custom House is a historic federal building in New York City that once served as the primary customs collection point for the bustling port, reflecting the city’s central role in American trade and finance.
-
E.
Long Wharf Custom House Block
Long Wharf Custom House Block is a historic waterfront commercial building in Boston that once served as a key hub for maritime trade and customs operations.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
custom house
ⓘ
federal building ⓘ government building ⓘ historic building ⓘ |
| architecturalFeature |
ornate stone detailing
ⓘ
prominent central pavilion ⓘ symmetrical façade ⓘ |
| architecturalStyle | Second Empire ⓘ |
| associatedWith |
federal revenue collection
ⓘ
maritime trade ⓘ shipping industry ⓘ |
| buildingType | office building ⓘ |
| category |
Buildings and structures in Portland, Maine
ⓘ
Custom houses in the United States ⓘ Second Empire architecture in Maine ⓘ |
| completionDate | late 19th century ⓘ |
| constructionStart | 1860s ⓘ |
| context | federal presence in Portland’s waterfront district ⓘ |
| country | United States of America ⓘ |
| floorCount | multiple stories ⓘ |
| function |
customs administration
ⓘ
maritime trade administration ⓘ |
| governingBody | United States Customs Service ⓘ |
| heritageDesignation |
contributing property in a historic district
ⓘ
listed on the National Register of Historic Places ⓘ |
| historicEra | 19th century ⓘ |
| historicRole | administrative hub for Portland’s port activities ⓘ |
| locatedInTheAdministrativeTerritorialEntity | Cumberland County, Maine ⓘ |
| location | Portland, Maine ⓘ |
| maintainedBy | U.S. General Services Administration ⓘ |
| materialUsed | stone ⓘ |
| nearbyFeature |
Portland Harbor
ⓘ
linked to:
Portland harbor
|
| notableFor |
grand 19th-century design
ⓘ
imposing civic presence on the Portland waterfront ⓘ |
| owner |
United States federal government
ⓘ
linked to:
United States government
|
| periodOfUse |
19th century
ⓘ
20th century ⓘ 21st century ⓘ |
| publicAccess | limited ⓘ |
| regionServed |
Portland, Maine customs district
ⓘ
linked to:
Port of Portland (Maine)
|
| roofType | mansard roof ⓘ |
| significance |
important center for customs operations in Portland Harbor
ⓘ
symbol of 19th-century maritime commerce in Portland ⓘ |
| use |
offices for customs officials
ⓘ
processing of import and export documentation ⓘ |
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: U.S. Custom House (Portland, Maine) Description of subject: The U.S. Custom House in Portland, Maine is a grand 19th-century federal building designed in the Second Empire style, serving historically as a key center for customs and maritime trade administration.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: U.S. Custom House (Portland, Maine)