Gregory Chamitoff
E824554
Gregory Chamitoff is a Canadian-born American engineer and former NASA astronaut who flew on multiple Space Shuttle missions and served long-duration stays aboard the International Space Station.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Gregory Chamitoff canonical | 2 |
| Gregory Errol Chamitoff | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9635447 — 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: Gregory Chamitoff Context triple: [STS-134, missionSpecialist, Gregory Chamitoff]
-
A.
Michael Hecht
Michael Hecht is the birth name of Michael Howard, a British Conservative politician who served as Leader of the Opposition and Home Secretary.
-
B.
Michael Hecht
Michael Hecht is a scientist best known for leading NASA’s MOXIE experiment on the Perseverance rover, which demonstrates in-situ oxygen production on Mars.
-
C.
Michael Goulian
Michael Goulian is an American aerobatic champion and airshow performer best known for competing at the highest level in international air racing events.
-
D.
Michael Gelman
Michael Gelman is a longtime American television producer best known for his work shaping and overseeing the daytime talk show "Live!" through its various host pairings.
-
E.
Sam Greisman
Sam Greisman is an American writer and director known publicly as the son of acclaimed actress Sally Field.
- 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: Gregory Chamitoff Target entity description: Gregory Chamitoff is a Canadian-born American engineer and former NASA astronaut who flew on multiple Space Shuttle missions and served long-duration stays aboard the International Space Station.
-
A.
Michael Hecht
Michael Hecht is the birth name of Michael Howard, a British Conservative politician who served as Leader of the Opposition and Home Secretary.
-
B.
Michael Hecht
Michael Hecht is a scientist best known for leading NASA’s MOXIE experiment on the Perseverance rover, which demonstrates in-situ oxygen production on Mars.
-
C.
Michael Goulian
Michael Goulian is an American aerobatic champion and airshow performer best known for competing at the highest level in international air racing events.
-
D.
Michael Gelman
Michael Gelman is a longtime American television producer best known for his work shaping and overseeing the daytime talk show "Live!" through its various host pairings.
-
E.
Sam Greisman
Sam Greisman is an American writer and director known publicly as the son of acclaimed actress Sally Field.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
NASA astronaut
ⓘ
aerospace engineer ⓘ human ⓘ |
| birthDate | 1962-08-06 ⓘ |
| birthPlace | Montreal, Quebec, Canada ⓘ |
| countryOfCitizenship |
Canada
ⓘ
United States of America ⓘ |
| degree |
Bachelor of Science in Electrical Engineering
ⓘ
Doctor of Philosophy in Aeronautics and Astronautics ⓘ Master of Science in Engineering ⓘ |
| educatedAt |
California Polytechnic State University
ⓘ
Massachusetts Institute of Technology ⓘ University of Massachusetts Lowell ⓘ |
| employer | NASA ⓘ |
| familyName | Chamitoff ⓘ |
| fieldOfWork |
aerospace engineering
ⓘ
spaceflight ⓘ |
| gender | male ⓘ |
| givenName | Gregory ⓘ |
| hasChild |
daughter
ⓘ
son ⓘ |
| hasHonor |
NASA Exceptional Service Medal
ⓘ
NASA Space Flight Medal ⓘ |
| languageSpoken | English ⓘ |
| launchedTo | International Space Station ⓘ |
| missionRole |
flight engineer
ⓘ
mission specialist ⓘ |
| name |
Gregory Errol Chamitoff
ⓘ
linked to:
Gregory Chamitoff
|
| notableFor |
long-duration stay aboard the International Space Station
ⓘ
participation in final flight of Space Shuttle Endeavour STS-134 ⓘ |
| numberOfEVAs | 2 ⓘ |
| occupation |
astronaut
ⓘ
engineer ⓘ |
| performedExtravehicularActivity | yes ⓘ |
| residence |
Texas, United States
ⓘ
linked to:
Texas
|
| retiredFromNASA | 2013 ⓘ |
| selectedAsAstronaut | 1998 ⓘ |
| spaceMission |
Expedition 17
ⓘ
Expedition 18 ⓘ STS-124 ⓘ STS-126 ⓘ STS-134 ⓘ |
| spouse | Alina Chamitoff ⓘ |
| timeInSpace | approximately 198 days ⓘ |
| totalEVATime | 13 hours 43 minutes ⓘ |
| workedOn | Guidance, navigation, and control systems ⓘ |
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: Gregory Chamitoff Description of subject: Gregory Chamitoff is a Canadian-born American engineer and former NASA astronaut who flew on multiple Space Shuttle missions and served long-duration stays aboard the International Space Station.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Gregory Chamitoff