Glen Penfield
E258888
Glen Penfield is a geophysicist best known for identifying the Chicxulub impact structure, now widely linked to the mass extinction event that wiped out the dinosaurs.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Glen Penfield canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2342702 — 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: Glen Penfield Context triple: [Chicxulub impact crater, discoveredBy, Glen Penfield]
-
A.
Douglas Ainslie
Douglas Ainslie is a mild-mannered, retired British man seeking a new start in India in the film "The Best Exotic Marigold Hotel," portrayed by Bill Nighy.
-
B.
Roy Innis
Roy Innis was an American civil rights activist and long-time national chairman of the Congress of Racial Equality, known for his conservative views and outspoken advocacy on race and social policy.
-
C.
Ronald Villency
Ronald Villency is the son of American television news personality and political commentator Kimberly Guilfoyle.
-
D.
George Paton
George Paton is an NFL executive best known for serving as the general manager responsible for building and overseeing the Denver Broncos’ roster and football operations.
-
E.
Humphry Osmond
Humphry Osmond was a British-born psychiatrist best known for coining the term "psychedelic" and pioneering research into the therapeutic use of hallucinogens in mental health treatment.
- 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: Glen Penfield Target entity description: Glen Penfield is a geophysicist best known for identifying the Chicxulub impact structure, now widely linked to the mass extinction event that wiped out the dinosaurs.
-
A.
Douglas Ainslie
Douglas Ainslie is a mild-mannered, retired British man seeking a new start in India in the film "The Best Exotic Marigold Hotel," portrayed by Bill Nighy.
-
B.
Roy Innis
Roy Innis was an American civil rights activist and long-time national chairman of the Congress of Racial Equality, known for his conservative views and outspoken advocacy on race and social policy.
-
C.
Ronald Villency
Ronald Villency is the son of American television news personality and political commentator Kimberly Guilfoyle.
-
D.
George Paton
George Paton is an NFL executive best known for serving as the general manager responsible for building and overseeing the Denver Broncos’ roster and football operations.
-
E.
Humphry Osmond
Humphry Osmond was a British-born psychiatrist best known for coining the term "psychedelic" and pioneering research into the therapeutic use of hallucinogens in mental health treatment.
- F. None of above. chosen
Statements (24)
| Predicate | Object |
|---|---|
| instanceOf |
geophysicist
ⓘ
person ⓘ |
| associatedWith |
Chicxulub impact crater
ⓘ
surface form:
Chicxulub impact structure
Cretaceous–Paleogene boundary research ⓘ |
| contributedTo |
linking the Chicxulub impact to the Cretaceous–Paleogene extinction event
ⓘ
understanding of the dinosaur extinction event ⓘ |
| countryOfCitizenship | United States of America ⓘ |
| discovered | evidence for the Chicxulub impact structure ⓘ |
| fieldOfWork |
geophysics
ⓘ
petroleum exploration geophysics ⓘ |
| hasNotableRecognition | recognition within the geoscience community for the Chicxulub discovery ⓘ |
| hasResearchInterest |
impact craters
ⓘ
mass extinction events ⓘ |
| impact | advanced acceptance of an impact cause for the end-Cretaceous mass extinction ⓘ |
| inferredFrom | geophysical data from oil exploration surveys ⓘ |
| knownFor |
identification of the Chicxulub impact structure
ⓘ
work on the Chicxulub crater ⓘ |
| notableAchievement | helped establish the impact origin of the Chicxulub structure ⓘ |
| notableWork | geophysical surveys of the Yucatán Peninsula ⓘ |
| occupation | geophysicist ⓘ |
| placeOfWork |
Yucatán Peninsula
ⓘ
surface form:
Yucatán Peninsula region
|
| usedMethod |
aerogeophysical mapping
ⓘ
gravity surveys ⓘ magnetic surveys ⓘ |
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: Glen Penfield Description of subject: Glen Penfield is a geophysicist best known for identifying the Chicxulub impact structure, now widely linked to the mass extinction event that wiped out the dinosaurs.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.