Jacob Singer
E932866
Jacob Singer is the traumatized Vietnam War veteran and New York postal worker whose disturbing hallucinations and fragmented reality drive the psychological horror narrative of the film "Jacob's Ladder."
All labels observed (1)
| Label | Occurrences |
|---|---|
| Jacob Singer canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T11555306 — 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: Jacob Singer Context triple: [Jacob's Ladder, mainCharacter, Jacob Singer]
-
A.
Marie Meyer
Marie Meyer was the wife of the prominent German historian Eduard Meyer.
-
B.
Leonore Cohn
Leonore Cohn, later known as Leonore Annenberg, was an American philanthropist and arts patron who served as Chief of Protocol of the United States under President Ronald Reagan.
-
C.
Felicitas Radke
Felicitas Radke was the wife of renowned German actor Conrad Veidt, known for her marriage to this prominent figure of early 20th-century cinema.
-
D.
Marie Ortmann
Marie Ortmann was the mother of aviation pioneer and Boeing Company founder William E. Boeing.
-
E.
Jeanne Rosenberg
Jeanne Rosenberg is an American screenwriter best known for her work on the acclaimed 1979 film adaptation of "The Black Stallion" and other family-oriented adventure films.
- 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: Jacob Singer Target entity description: Jacob Singer is the traumatized Vietnam War veteran and New York postal worker whose disturbing hallucinations and fragmented reality drive the psychological horror narrative of the film "Jacob's Ladder."
-
A.
Marie Meyer
Marie Meyer was the wife of the prominent German historian Eduard Meyer.
-
B.
Leonore Cohn
Leonore Cohn, later known as Leonore Annenberg, was an American philanthropist and arts patron who served as Chief of Protocol of the United States under President Ronald Reagan.
-
C.
Felicitas Radke
Felicitas Radke was the wife of renowned German actor Conrad Veidt, known for her marriage to this prominent figure of early 20th-century cinema.
-
D.
Marie Ortmann
Marie Ortmann was the mother of aviation pioneer and Boeing Company founder William E. Boeing.
-
E.
Jeanne Rosenberg
Jeanne Rosenberg is an American screenwriter best known for her work on the acclaimed 1979 film adaptation of "The Black Stallion" and other family-oriented adventure films.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
fictional character
ⓘ
film character ⓘ protagonist ⓘ |
| appearsIn | Jacob's Ladder ⓘ |
| associatedWith | chemical warfare experiments in Vietnam (within film narrative) ⓘ |
| conflict | Vietnam War ⓘ |
| createdBy | Bruce Joel Rubin ⓘ |
| culturalImpact | iconic representation of PTSD in horror cinema ⓘ |
| diegeticStatus | veteran ⓘ |
| employer | United States Postal Service ⓘ |
| familyRole |
ex-husband
ⓘ
father ⓘ |
| firstAppearance | film Jacob's Ladder (1990) ⓘ |
| genreContext |
psychological horror
ⓘ
supernatural horror ⓘ |
| hasChild | Gabe Singer ⓘ |
| hasExSpouse | Sarah Singer ⓘ |
| hasPartner | Jezzie ⓘ |
| medium | film ⓘ |
| mentalState | traumatized ⓘ |
| militaryService | United States Army ⓘ |
| name | Jacob Singer ⓘ |
| narrativeDevice | unreliable perception ⓘ |
| narrativeRole | main character ⓘ |
| narrativeTwistInvolvement | revelation of death in Vietnam ⓘ |
| nationality | American ⓘ |
| notableScene |
hospital nightmare sequence
ⓘ
subway hallucination sequence ⓘ |
| occupation | postal worker ⓘ |
| plotElement |
experimental drug exposure
ⓘ
near-death experience ⓘ |
| portrayedBy | Tim Robbins ⓘ |
| religiousBackground | Jewish ⓘ |
| setting | New York City ⓘ |
| storyStructureFunction | point-of-view character ⓘ |
| symbolism |
purgatory
ⓘ
spiritual ascent ⓘ |
| symptom |
disorientation
ⓘ
flashbacks ⓘ hallucinations ⓘ |
| themeAssociation |
afterlife
ⓘ
death ⓘ grief ⓘ guilt ⓘ post-traumatic stress disorder ⓘ reality versus illusion ⓘ |
| traumaOrigin | combat in Vietnam ⓘ |
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: Jacob Singer Description of subject: Jacob Singer is the traumatized Vietnam War veteran and New York postal worker whose disturbing hallucinations and fragmented reality drive the psychological horror narrative of the film "Jacob's Ladder."
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.