Casco Bay Lines
E168958
Casco Bay Lines is a ferry service operating passenger and vehicle routes among the islands and mainland ports of Casco Bay in Maine.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Casco Bay Lines canonical | 3 |
| Casco Bay Lines ferry | 2 |
| Casco Bay Lines (ferry) | 1 |
| Casco Bay Lines ferry service | 1 |
| Portland–Casco Bay ferry network | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1478558 — 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: Casco Bay Lines Context triple: [Casco Bay, servedBy, Casco Bay Lines]
-
A.
Maine State Ferry Service
The Maine State Ferry Service is a publicly operated ferry system that provides essential transportation between mainland Maine and several of its coastal island communities.
-
B.
Steamship Authority ferries
Steamship Authority ferries are passenger and vehicle ferry services that connect mainland Massachusetts to island destinations such as Martha’s Vineyard and Nantucket.
-
C.
Pierce Transit
Pierce Transit is a public transportation agency serving Pierce County, Washington, providing local bus, paratransit, and related transit services in the South Puget Sound region.
-
D.
Washington State Ferries
Washington State Ferries is the largest ferry system in the United States, operating a network of passenger and vehicle routes across the waterways of Washington State.
-
E.
Washington Island Ferry Line
Washington Island Ferry Line is a ferry service that transports passengers, vehicles, and goods between Washington Island and the Door Peninsula in Wisconsin.
- 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: Casco Bay Lines Target entity description: Casco Bay Lines is a ferry service operating passenger and vehicle routes among the islands and mainland ports of Casco Bay in Maine.
-
A.
Maine State Ferry Service
The Maine State Ferry Service is a publicly operated ferry system that provides essential transportation between mainland Maine and several of its coastal island communities.
-
B.
Steamship Authority ferries
Steamship Authority ferries are passenger and vehicle ferry services that connect mainland Massachusetts to island destinations such as Martha’s Vineyard and Nantucket.
-
C.
Pierce Transit
Pierce Transit is a public transportation agency serving Pierce County, Washington, providing local bus, paratransit, and related transit services in the South Puget Sound region.
-
D.
Washington State Ferries
Washington State Ferries is the largest ferry system in the United States, operating a network of passenger and vehicle routes across the waterways of Washington State.
-
E.
Washington Island Ferry Line
Washington Island Ferry Line is a ferry service that transports passengers, vehicles, and goods between Washington Island and the Door Peninsula in Wisconsin.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
ferry operator
ⓘ
public transportation provider ⓘ |
| connects |
inhabited islands of Casco Bay
ⓘ
mainland Portland ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| fareSystem | ticket-based fares ⓘ |
| geographicScope | nearshore coastal waters of Casco Bay ⓘ |
| hasTransportCategory | public ferry system ⓘ |
| hasWebsite | https://www.cascobaylines.com ⓘ |
| headquartersLocation | Portland, Maine ⓘ |
| industry | maritime transportation ⓘ |
| languageOfService | English ⓘ |
| locatedIn |
Casco Bay
ⓘ
Maine ⓘ Portland, Maine ⓘ |
| mainTerminal | Maine State Pier ⓘ |
| notableFor | providing essential transportation to Casco Bay islands ⓘ |
| offers |
commuter passes
ⓘ
island resident fares ⓘ tour and cruise tickets ⓘ |
| operatesIn |
Casco Bay
ⓘ
Portland, Maine ⓘ |
| operatesService |
mail and freight service
ⓘ
seasonal cruise service ⓘ year-round ferry service ⓘ |
| operatesVesselType |
passenger ferry vessels
ⓘ
vehicle ferry vessels ⓘ |
| operationalFocus | short-distance coastal ferry routes ⓘ |
| publicTransitRole | lifeline service for island communities ⓘ |
| regionServed | Greater Portland, Maine ⓘ |
| regulatoryEnvironment | maritime regulations of the United States ⓘ |
| routeType |
inter-island routes
ⓘ
island–mainland routes ⓘ |
| serves |
Chebeague Island
ⓘ
linked to:
Chebeague Island, Maine
Cliff Island ⓘ Great Diamond Island ⓘ Little Diamond Island ⓘ Long Island, Maine ⓘ Peaks Island ⓘ Portland waterfront ⓘ |
| serviceType |
commuter ferry
ⓘ
ferry service ⓘ passenger ferry ⓘ tourist ferry ⓘ vehicle ferry ⓘ |
| transportMode | water transport ⓘ |
| usesInfrastructure | Portland harbor ⓘ |
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: Casco Bay Lines Description of subject: Casco Bay Lines is a ferry service operating passenger and vehicle routes among the islands and mainland ports of Casco Bay in Maine.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Casco Bay Lines
linked to: Casco Bay Lines
linked to: Casco Bay Lines
linked to: Casco Bay Lines
linked to: Casco Bay Lines