Michael Maurice O'Shaughnessy
E542530
Michael Maurice O'Shaughnessy was an Irish-born civil engineer best known as San Francisco’s city engineer who oversaw major infrastructure projects, including the Hetch Hetchy water system.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Michael Maurice O'Shaughnessy canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5554502 — 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: Michael Maurice O'Shaughnessy Context triple: [O'Shaughnessy Dam, namedAfter, Michael Maurice O'Shaughnessy]
-
A.
Maurice Walsh
Maurice Walsh was an Irish author best known for writing the short story that inspired the film "The Quiet Man."
-
B.
John McGlynn
John McGlynn is a Scottish football manager best known for his successful spells in charge of Raith Rovers.
-
C.
John Carroll O’Connor
John Carroll O’Connor was an American actor best known for his iconic role as Archie Bunker on the groundbreaking television sitcom "All in the Family."
-
D.
Eugene Commins
Eugene Commins was an American experimental physicist at UC Berkeley known for his precision measurements in atomic physics and for mentoring notable students, including future Nobel laureist Steven Chu.
-
E.
William Henry O’Connell
William Henry O’Connell was a prominent early 20th-century American cardinal of the Roman Catholic Church who wielded significant religious and political influence as the longtime leader of the Boston church.
- 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: Michael Maurice O'Shaughnessy Target entity description: Michael Maurice O'Shaughnessy was an Irish-born civil engineer best known as San Francisco’s city engineer who oversaw major infrastructure projects, including the Hetch Hetchy water system.
-
A.
Maurice Walsh
Maurice Walsh was an Irish author best known for writing the short story that inspired the film "The Quiet Man."
-
B.
John McGlynn
John McGlynn is a Scottish football manager best known for his successful spells in charge of Raith Rovers.
-
C.
John Carroll O’Connor
John Carroll O’Connor was an American actor best known for his iconic role as Archie Bunker on the groundbreaking television sitcom "All in the Family."
-
D.
Eugene Commins
Eugene Commins was an American experimental physicist at UC Berkeley known for his precision measurements in atomic physics and for mentoring notable students, including future Nobel laureist Steven Chu.
-
E.
William Henry O’Connell
William Henry O’Connell was a prominent early 20th-century American cardinal of the Roman Catholic Church who wielded significant religious and political influence as the longtime leader of the Boston church.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
Irish emigrant to the United States
ⓘ
civil engineer ⓘ person ⓘ |
| areaOfInfluence | San Francisco Bay Area ⓘ |
| continentOfOrigin | Europe ⓘ |
| countryOfCitizenship | Ireland ⓘ |
| countryOfOrigin | Ireland ⓘ |
| employer |
City of San Francisco
ⓘ
linked to:
San Francisco
|
| ethnicGroup | Irish ⓘ |
| familyName | O'Shaughnessy ⓘ |
| fieldOfWork |
civil engineering
ⓘ
infrastructure engineering ⓘ |
| genre | public works engineering ⓘ |
| givenName | Michael ⓘ |
| knownFor |
leadership in large-scale water infrastructure projects
ⓘ
role as San Francisco city engineer ⓘ |
| languageSpoken | English ⓘ |
| middleName | Maurice ⓘ |
| notableFor |
development of the Hetch Hetchy water supply for San Francisco
ⓘ
oversight of major infrastructure projects in San Francisco ⓘ |
| notableProject |
Hetch Hetchy aqueduct
ⓘ
linked to:
Hetch Hetchy Aqueduct
San Francisco municipal infrastructure expansion ⓘ San Francisco water supply system ⓘ
linked to:
San Francisco Peninsula reservoir system
|
| notableWork |
Hetch Hetchy water system
ⓘ
linked to:
Hetch Hetchy Aqueduct
San Francisco municipal infrastructure projects ⓘ |
| occupation |
city engineer
ⓘ
civil engineer ⓘ |
| placeOfBirth | Ireland ⓘ |
| positionHeld | City Engineer of San Francisco ⓘ |
| residence | San Francisco ⓘ |
| workLocation | San Francisco ⓘ |
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: Michael Maurice O'Shaughnessy Description of subject: Michael Maurice O'Shaughnessy was an Irish-born civil engineer best known as San Francisco’s city engineer who oversaw major infrastructure projects, including the Hetch Hetchy water system.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.