Liberty ships
E234733
Liberty ships were mass-produced American cargo vessels built during World War II to rapidly transport war supplies and troops across the Atlantic and other theaters.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Liberty ships canonical | 5 |
| Liberty ship | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T2090753 — 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: Liberty ships Context triple: [United States Maritime Commission, produced, Liberty ships]
-
A.
C1 cargo ships
C1 cargo ships were a class of small to medium-sized American cargo vessels built during World War II for efficient coastal and short-sea transport.
-
B.
United States Shipping Board
The United States Shipping Board was a U.S. federal agency established during World War I to regulate and promote the American merchant marine and oversee the construction and operation of commercial ships.
-
C.
Great White Fleet
The Great White Fleet was the United Fruit Company's private fleet of refrigerated ships used primarily in the early 20th century to transport bananas and other produce between Latin America and the United States.
-
D.
Benham-class destroyer
The Benham-class destroyer was a group of U.S. Navy warships built in the late 1930s that featured improved torpedo armament and served extensively during World War II.
-
E.
Issaquah-class ferry
The Issaquah-class ferry is a series of medium-sized, double-ended car and passenger ferries operated by Washington State Ferries on various routes in Puget Sound.
- 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: Liberty ships Target entity description: Liberty ships were mass-produced American cargo vessels built during World War II to rapidly transport war supplies and troops across the Atlantic and other theaters.
-
A.
C1 cargo ships
C1 cargo ships were a class of small to medium-sized American cargo vessels built during World War II for efficient coastal and short-sea transport.
-
B.
United States Shipping Board
The United States Shipping Board was a U.S. federal agency established during World War I to regulate and promote the American merchant marine and oversee the construction and operation of commercial ships.
-
C.
Great White Fleet
The Great White Fleet was the United Fruit Company's private fleet of refrigerated ships used primarily in the early 20th century to transport bananas and other produce between Latin America and the United States.
-
D.
Benham-class destroyer
The Benham-class destroyer was a group of U.S. Navy warships built in the late 1930s that featured improved torpedo armament and served extensively during World War II.
-
E.
Issaquah-class ferry
The Issaquah-class ferry is a series of medium-sized, double-ended car and passenger ferries operated by Washington State Ferries on various routes in Puget Sound.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
World War II ship type
ⓘ
cargo ship ⓘ |
| armament | defensive guns for anti-submarine and anti-aircraft use ⓘ |
| averageDeadweightTonnage | about 10000 DWT ⓘ |
| basedOn | British Ocean-class cargo ship design ⓘ |
| beam | approximately 57 feet ⓘ |
| builtAt |
Alabama Drydock and Shipbuilding Company
ⓘ
linked to:
Alabama Dry Dock and Shipbuilding Company
Bethlehem-Fairfield Shipyard ⓘ California Shipbuilding Corporation ⓘ Kaiser Shipyards ⓘ
linked to:
Kaiser Richmond Shipyards
North Carolina Shipbuilding Company ⓘ Oregon Shipbuilding Corporation ⓘ |
| builtIn | United States shipyards ⓘ |
| conflict | World War II ⓘ |
| constructionMethod |
mass production
ⓘ
welded hull ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| crewComplement |
about 20–40 Naval Armed Guard
ⓘ
about 40 merchant crew ⓘ |
| designedBy | United States Maritime Commission ⓘ |
| developedBy | United States Maritime Commission ⓘ |
| firstLaidDown | 1941 ⓘ |
| hasPurpose |
ocean cargo transport
ⓘ
transport of troops ⓘ transport of war supplies ⓘ |
| historicalSignificance | symbol of American industrial mobilization in World War II ⓘ |
| length | approximately 441 feet ⓘ |
| material | steel ⓘ |
| notableExample |
SS Jeremiah O'Brien
ⓘ
linked to:
SS Jeremiah O’Brien
SS John W. Brown ⓘ SS Robert E. Peary ⓘ
linked to:
SS John W. Brown
|
| notableIssue | hull cracking in cold waters ⓘ |
| numberBuilt | 2710 ⓘ |
| operatedIn |
Atlantic Ocean
ⓘ
Mediterranean Sea ⓘ Pacific Ocean ⓘ |
| postwarUse |
commercial cargo service
ⓘ
conversion to other civilian uses ⓘ reserve fleet storage ⓘ |
| productionPeriodEnd | 1945 ⓘ |
| productionPeriodStart | 1941 ⓘ |
| propulsion | triple-expansion steam engine ⓘ |
| record | SS Robert E. Peary was built in under 5 days ⓘ |
| replacedBy | Victory ship ⓘ |
| roleInBattle | Battle of the Atlantic ⓘ |
| serviceEntry | 1941 ⓘ |
| speed | about 11 knots ⓘ |
| usedBy |
Allied powers
ⓘ
British Merchant Navy ⓘ
linked to:
British merchant navy
United States Merchant Marine ⓘ
linked to:
United States merchant marine
United States Navy ⓘ |
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: Liberty ships Description of subject: Liberty ships were mass-produced American cargo vessels built during World War II to rapidly transport war supplies and troops across the Atlantic and other theaters.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.