Ian Campbell
E851276
Ian Campbell was a Los Angeles Police Department officer whose 1963 kidnapping and murder became the basis for Joseph Wambaugh’s true-crime book and film "The Onion Field."
All labels observed (1)
| Label | Occurrences |
|---|---|
| Ian Campbell canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9839453 — 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: Ian Campbell Context triple: [The Onion Field, portraysRealPerson, Ian Campbell]
-
A.
Alan MacDonald
Alan MacDonald was a British production designer and art director known for his stylish, visually distinctive work on films such as "Bright Young Things," "The Queen," and "The Best Exotic Marigold Hotel."
-
B.
Charlie MacLean
Charlie MacLean is a television writer and producer best known for creating the crime drama series "City on a Hill."
-
C.
Al MacNeil
Al MacNeil is a Canadian former NHL defenseman and coach best known for leading the Montreal Canadiens to the 1971 Stanley Cup championship.
-
D.
Duncan Campbell
Duncan Campbell is a British journalist and writer best known for his investigative reporting and his long-term marriage to actress Julie Christie.
-
E.
Andrew McAlpine
Andrew McAlpine is a British production designer and art director known for his distinctive visual work on films such as "Sid and Nancy."
- 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: Ian Campbell Target entity description: Ian Campbell was a Los Angeles Police Department officer whose 1963 kidnapping and murder became the basis for Joseph Wambaugh’s true-crime book and film "The Onion Field."
-
A.
Alan MacDonald
Alan MacDonald was a British production designer and art director known for his stylish, visually distinctive work on films such as "Bright Young Things," "The Queen," and "The Best Exotic Marigold Hotel."
-
B.
Charlie MacLean
Charlie MacLean is a television writer and producer best known for creating the crime drama series "City on a Hill."
-
C.
Al MacNeil
Al MacNeil is a Canadian former NHL defenseman and coach best known for leading the Montreal Canadiens to the 1971 Stanley Cup championship.
-
D.
Duncan Campbell
Duncan Campbell is a British journalist and writer best known for his investigative reporting and his long-term marriage to actress Julie Christie.
-
E.
Andrew McAlpine
Andrew McAlpine is a British production designer and art director known for his distinctive visual work on films such as "Sid and Nancy."
- F. None of above. chosen
Statements (34)
| Predicate | Object |
|---|---|
| instanceOf |
criminal case
ⓘ
film ⓘ human ⓘ non-fiction book ⓘ police officer ⓘ |
| author | Joseph Wambaugh NERFINISHED ⓘ |
| basedOn |
The Onion Field (book)
NERFINISHED
ⓘ
kidnapping and murder of Ian Campbell ⓘ kidnapping and murder of Ian Campbell ⓘ |
| countryOfCitizenship | United States of America ⓘ |
| dateOfDeath | 1963 ⓘ |
| employer | Los Angeles Police Department NERFINISHED ⓘ |
| genre |
crime film
ⓘ
true crime ⓘ |
| hasDepiction |
The Onion Field (book)
NERFINISHED
ⓘ
The Onion Field (film) NERFINISHED ⓘ |
| hasLocation | Los Angeles, California NERFINISHED ⓘ |
| hasNotableVictimRoleIn | The Onion Field case GENERATED ⓘ |
| hasRole | LAPD officer ⓘ |
| hasVictim | Ian Campbell NERFINISHED ⓘ |
| hasWorkplace | Los Angeles Police Department NERFINISHED ⓘ |
| inspiredWork |
The Onion Field (book)
NERFINISHED
ⓘ
The Onion Field (film) NERFINISHED ⓘ |
| lawEnforcementAgency | Los Angeles Police Department NERFINISHED ⓘ |
| notableEvent | 1963 kidnapping and murder in Los Angeles ⓘ |
| notableFor | kidnapping and murder in 1963 ⓘ |
| notableWork | The Onion Field (book) NERFINISHED ⓘ |
| occupation |
author
ⓘ
police officer ⓘ |
| partOf | Los Angeles Police Department NERFINISHED ⓘ |
| placeOfWork | Los Angeles NERFINISHED ⓘ |
| victimOf |
kidnapping
ⓘ
murder ⓘ |
| workLocation | Los Angeles, California 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: Ian Campbell Description of subject: Ian Campbell was a Los Angeles Police Department officer whose 1963 kidnapping and murder became the basis for Joseph Wambaugh’s true-crime book and film "The Onion Field."
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.