Steven G. MacLean
E692329
Steven G. MacLean is a Canadian astronaut and physicist who flew on two Space Shuttle missions and later served as president of the Canadian Space Agency.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Steven G. MacLean canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7603383 — 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: Steven G. MacLean Context triple: [STS-115, missionSpecialist, Steven G. MacLean]
-
A.
Stuart E. McGowan
Stuart E. McGowan was an American screenwriter active during Hollywood’s classic era, known for his work on Western films.
-
B.
Michael J. Duthie
Michael J. Duthie is a publishing professional best known for serving as an editor of the periodical The Outpost.
-
C.
Jeffrey S. Mearns
Jeffrey S. Mearns is an American academic leader and attorney who serves as the president of Ball State University in Indiana.
-
D.
Barrie M. Osborne
Barrie M. Osborne is an American film producer best known for his work on large-scale, critically acclaimed epics such as The Lord of the Rings trilogy.
-
E.
Peter A. Tyrrell
Peter A. Tyrrell was an American sports executive and promoter best known for his role in establishing and developing the early professional basketball franchise that became the Philadelphia Warriors.
- 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: Steven G. MacLean Target entity description: Steven G. MacLean is a Canadian astronaut and physicist who flew on two Space Shuttle missions and later served as president of the Canadian Space Agency.
-
A.
Stuart E. McGowan
Stuart E. McGowan was an American screenwriter active during Hollywood’s classic era, known for his work on Western films.
-
B.
Michael J. Duthie
Michael J. Duthie is a publishing professional best known for serving as an editor of the periodical The Outpost.
-
C.
Jeffrey S. Mearns
Jeffrey S. Mearns is an American academic leader and attorney who serves as the president of Ball State University in Indiana.
-
D.
Barrie M. Osborne
Barrie M. Osborne is an American film producer best known for his work on large-scale, critically acclaimed epics such as The Lord of the Rings trilogy.
-
E.
Peter A. Tyrrell
Peter A. Tyrrell was an American sports executive and promoter best known for his role in establishing and developing the early professional basketball franchise that became the Philadelphia Warriors.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Canadian astronaut
ⓘ
astronaut ⓘ human ⓘ physicist ⓘ |
| academicDegree |
Bachelor of Science in physics
ⓘ
Doctor of Philosophy in physics ⓘ Master of Science in physics ⓘ |
| affiliation | International Space Station program NERFINISHED ⓘ |
| countryOfCitizenship | Canada ⓘ |
| educatedAt |
University of Toronto
ⓘ
York University NERFINISHED ⓘ |
| employer |
Canadian Space Agency
NERFINISHED
ⓘ
NASA ⓘ National Research Council of Canada NERFINISHED ⓘ |
| fieldOfWork |
laser physics
ⓘ
nonlinear optics ⓘ physics ⓘ space science ⓘ |
| gender | male ⓘ |
| hasActivity |
scientific research in microgravity
ⓘ
space agency leadership ⓘ spaceflight operations ⓘ |
| hasGivenOccupation |
administrator
ⓘ
research scientist ⓘ |
| memberOf | Canadian Astronaut Corps NERFINISHED ⓘ |
| nativeLanguage | English ⓘ |
| notableAchievement |
flew on two Space Shuttle missions
ⓘ
served as president of the Canadian Space Agency ⓘ |
| notableFor |
contributions to Canadian human spaceflight
ⓘ
leadership of the Canadian Space Agency ⓘ |
| notableRole |
Canadian mission specialist on STS-115
ⓘ
Canadian payload specialist on STS-52 ⓘ |
| notableWork |
assembly and maintenance tasks on the International Space Station during STS-115
ⓘ
development and testing of the Canadarm2 sensors ⓘ microgravity science experiments on STS-52 ⓘ |
| occupation |
astronaut
ⓘ
physicist ⓘ |
| participatedIn |
Space Shuttle mission STS-115
NERFINISHED
ⓘ
Space Shuttle mission STS-52 NERFINISHED ⓘ |
| positionHeld |
astronaut of the Canadian Space Agency
ⓘ
mission specialist ⓘ president of the Canadian Space Agency ⓘ |
| spaceMission |
STS-115
NERFINISHED
ⓘ
STS-52 NERFINISHED ⓘ |
| workLocation |
Houston, Texas
NERFINISHED
ⓘ
Ottawa, Ontario NERFINISHED ⓘ Saint-Hubert, Quebec NERFINISHED ⓘ |
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: Steven G. MacLean Description of subject: Steven G. MacLean is a Canadian astronaut and physicist who flew on two Space Shuttle missions and later served as president of the Canadian Space Agency.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.