Sikorsky R-4
E888180
The Sikorsky R-4 was the world’s first mass-produced helicopter and the first helicopter to be used operationally by the U.S. military during World War II.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sikorsky R-4 canonical | 7 |
How this entity was disambiguated
This entity first appeared as the object of triple T10822972 — 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: Sikorsky R-4 Context triple: [R-4, alsoKnownAs, Sikorsky R-4]
-
A.
Sikorsky S‑40
The Sikorsky S‑40 was an early 1930s American amphibious flying boat airliner used primarily by Pan American Airways for long-range overwater routes.
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B.
Sikorsky H-5 helicopter
The Sikorsky H-5 is an early post–World War II American utility and rescue helicopter that played a key role in pioneering rotary-wing military and search-and-rescue operations.
-
C.
Bell 47 helicopter
The Bell 47 helicopter is a pioneering light utility helicopter, famous as the first helicopter certified for civilian use and widely recognized for its distinctive bubble canopy and extensive service in both military and civilian roles.
-
D.
Bell H-13 Sioux
The Bell H-13 Sioux is a light, single-rotor helicopter best known for its extensive use by the U.S. Army during the Korean War, particularly in medical evacuation and observation roles.
-
E.
O-47 observation aircraft
The O-47 observation aircraft was a pre–World War II American military reconnaissance plane used by the U.S. Army Air Corps for aerial observation and liaison duties.
- 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: Sikorsky R-4 Target entity description: The Sikorsky R-4 was the world’s first mass-produced helicopter and the first helicopter to be used operationally by the U.S. military during World War II.
-
A.
Sikorsky S‑40
The Sikorsky S‑40 was an early 1930s American amphibious flying boat airliner used primarily by Pan American Airways for long-range overwater routes.
-
B.
Sikorsky H-5 helicopter
The Sikorsky H-5 is an early post–World War II American utility and rescue helicopter that played a key role in pioneering rotary-wing military and search-and-rescue operations.
-
C.
Bell 47 helicopter
The Bell 47 helicopter is a pioneering light utility helicopter, famous as the first helicopter certified for civilian use and widely recognized for its distinctive bubble canopy and extensive service in both military and civilian roles.
-
D.
Bell H-13 Sioux
The Bell H-13 Sioux is a light, single-rotor helicopter best known for its extensive use by the U.S. Army during the Korean War, particularly in medical evacuation and observation roles.
-
E.
O-47 observation aircraft
The O-47 observation aircraft was a pre–World War II American military reconnaissance plane used by the U.S. Army Air Corps for aerial observation and liaison duties.
- F. None of above. chosen
Statements (48)
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: Sikorsky R-4 Description of subject: The Sikorsky R-4 was the world’s first mass-produced helicopter and the first helicopter to be used operationally by the U.S. military during World War II.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.