MR-3
E548694
MR-3 is the designation for Mercury-Redstone 3, the NASA mission that carried Alan Shepard on the first American crewed spaceflight in 1961.
All labels observed (1)
| Label | Occurrences |
|---|---|
| MR-3 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5817466 — 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: MR-3 Context triple: [Mercury-Redstone 3, hasAlternativeName, MR-3]
-
A.
MR-73
MR-73 is a class of rubber-tired electric multiple unit trains used on the Montreal Metro system.
-
B.
Mark-3
Mark-3 is the third-generation Jaeger class to which the iconic mech Gipsy Danger belongs in the Pacific Rim universe.
-
C.
M-39
M-39 is a state highway in Michigan commonly known as the Southfield Freeway, serving as a major north–south commuter route in the Detroit metropolitan area.
-
D.
M-37
M-37 is a state highway in Michigan that runs up the Old Mission Peninsula, providing scenic access between Traverse City and the peninsula’s vineyards, orchards, and shoreline.
-
E.
MRK
MRK is the stock ticker symbol for Merck & Co., a major global pharmaceutical company known for developing prescription medicines, vaccines, and animal health products.
- 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: MR-3 Target entity description: MR-3 is the designation for Mercury-Redstone 3, the NASA mission that carried Alan Shepard on the first American crewed spaceflight in 1961.
-
A.
MR-73
MR-73 is a class of rubber-tired electric multiple unit trains used on the Montreal Metro system.
-
B.
Mark-3
Mark-3 is the third-generation Jaeger class to which the iconic mech Gipsy Danger belongs in the Pacific Rim universe.
-
C.
M-39
M-39 is a state highway in Michigan commonly known as the Southfield Freeway, serving as a major north–south commuter route in the Detroit metropolitan area.
-
D.
M-37
M-37 is a state highway in Michigan that runs up the Old Mission Peninsula, providing scenic access between Traverse City and the peninsula’s vineyards, orchards, and shoreline.
-
E.
MRK
MRK is the stock ticker symbol for Merck & Co., a major global pharmaceutical company known for developing prescription medicines, vaccines, and animal health products.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Mercury program mission
ⓘ
crewed suborbital flight ⓘ spaceflight mission ⓘ |
| apogee |
187.5 km
ⓘ
about 116 miles ⓘ |
| astronautNationality |
United States
ⓘ
linked to:
United States of America
|
| astronautRole | pilot ⓘ |
| capsuleManufacturer |
McDonnell Aircraft Corporation
ⓘ
linked to:
McDonnell Douglas
|
| capsuleName | Freedom 7 ⓘ |
| commander | Alan Shepard ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| crewCallsSign | Freedom 7 ⓘ |
| crewEgress | recovered at sea after splashdown ⓘ |
| crewMember | Alan Shepard ⓘ |
| crewSize | 1 ⓘ |
| firstOf | first American crewed spaceflight ⓘ |
| flightProfile | suborbital ballistic trajectory ⓘ |
| followedBy |
MR-4
ⓘ
Mercury-Redstone 4 ⓘ |
| hasAlternativeName |
Freedom 7 mission
ⓘ
Mercury-Redstone 3 ⓘ |
| historicalSignificance |
demonstrated Mercury spacecraft performance with a human on board
ⓘ
first U.S. human spaceflight mission ⓘ |
| landingSite | Atlantic Ocean ⓘ |
| landingType | splashdown ⓘ |
| launchDate | 1961-05-05 ⓘ |
| launchSite |
Cape Canaveral
ⓘ
Cape Canaveral Launch Complex 5 ⓘ |
| launchVehicle |
Mercury-Redstone launch vehicle
ⓘ
linked to:
Mercury-Redstone rocket
Redstone rocket ⓘ |
| launchYear | 1961 ⓘ |
| missionDuration | 00:15:28 ⓘ |
| missionType | crewed suborbital spaceflight ⓘ |
| operator | NASA ⓘ |
| partOf |
Project Mercury
ⓘ
linked to:
Mercury program
|
| precededBy | uncrewed Mercury-Redstone test flights ⓘ |
| programGoal | demonstrate manned spaceflight capability ⓘ |
| rangeDownrange |
486 km
ⓘ
about 302 miles ⓘ |
| recoveryShip | USS Lake Champlain ⓘ |
| relatedEvent | Space Race ⓘ |
| relatedMission | Vostok 1 ⓘ |
| rocketFamily | Redstone family ⓘ |
| safetyFeatureTested | Mercury escape system ⓘ |
| spaceAgency | NASA ⓘ |
| spacecraft | Mercury spacecraft Freedom 7 ⓘ |
| timePeriod | Cold War ⓘ |
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: MR-3 Description of subject: MR-3 is the designation for Mercury-Redstone 3, the NASA mission that carried Alan Shepard on the first American crewed spaceflight in 1961.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.