Captain Jack Harkness
E88094
Doctor Who character
Torchwood character
Torchwood leader
Torchwood operative
fictional character
former Time Agent
immortal being
time traveler
Captain Jack Harkness is a charismatic, time-traveling former Time Agent and immortal leader of the Torchwood Institute in the Doctor Who universe.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Captain Jack Harkness canonical | 36 |
| Jack Harkness | 12 |
| Captain Jack Harkness – Doctor Who | 1 |
| Captain Jack Harkness – Torchwood | 1 |
| John Barrowman as Captain Jack Harkness | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T671599 — 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: Captain Jack Harkness Context triple: [Torchwood, mainCharacter, Captain Jack Harkness]
-
A.
Roland Caulder
Roland Caulder is an actor known for his role in the film "The Iron Mask."
-
B.
John Underhill
John Underhill was a 17th-century English colonial soldier and militia leader in New England, known for his prominent and controversial role in early Native American conflicts.
-
C.
Harry Reeves
Harry Reeves was an American screenwriter known for his work on classic Walt Disney animated films, including contributing to the screenplay of the 1950 feature "Cinderella."
-
D.
Peter Smithers
Peter Smithers was a British Conservative politician, diplomat, and former intelligence officer who notably served as Secretary General of the Council of Europe in the 1960s.
-
E.
William Good
William Good was a 17th-century Massachusetts farmer best known as the husband of Sarah Good, one of the first women accused and executed during the Salem witch trials.
- 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: Captain Jack Harkness Target entity description: Captain Jack Harkness is a charismatic, time-traveling former Time Agent and immortal leader of the Torchwood Institute in the Doctor Who universe.
-
A.
Roland Caulder
Roland Caulder is an actor known for his role in the film "The Iron Mask."
-
B.
John Underhill
John Underhill was a 17th-century English colonial soldier and militia leader in New England, known for his prominent and controversial role in early Native American conflicts.
-
C.
Harry Reeves
Harry Reeves was an American screenwriter known for his work on classic Walt Disney animated films, including contributing to the screenplay of the 1950 feature "Cinderella."
-
D.
Peter Smithers
Peter Smithers was a British Conservative politician, diplomat, and former intelligence officer who notably served as Secretary General of the Council of Europe in the 1960s.
-
E.
William Good
William Good was a 17th-century Massachusetts farmer best known as the husband of Sarah Good, one of the first women accused and executed during the Salem witch trials.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
Doctor Who character
ⓘ
Torchwood character ⓘ Torchwood leader ⓘ Torchwood operative ⓘ fictional character ⓘ former Time Agent ⓘ immortal being ⓘ time traveler ⓘ |
| affiliation |
Time Agency
ⓘ
Torchwood ⓘ
surface form:
Torchwood Institute
Torchwood ⓘ
surface form:
Torchwood Three
|
| alias |
Captain Jack
ⓘ
Captain Jack Harkness ⓘ
surface form:
Jack Harkness
|
| appearsIn |
Doctor Who
ⓘ
Torchwood ⓘ |
| baseOfOperations |
Cardiff
ⓘ
Torchwood ⓘ
surface form:
Torchwood Hub
|
| becomesImmortalIn | The Parting of the Ways ⓘ |
| closeCompanionOf |
Martha Jones
ⓘ
Rose Tyler ⓘ The Doctor ⓘ |
| createdBy | Russell T Davies ⓘ |
| firstAppearance | The Empty Child ⓘ |
| firstAppearanceYear | 2005 ⓘ |
| franchise |
Doctor Who expanded universe
ⓘ
surface form:
Doctor Who universe
|
| fullName | Javic Piotr Thane ⓘ |
| gender | Male ⓘ |
| homePlanet | the Boeshane Peninsula ⓘ |
| homeRegion |
the Boeshane Peninsula
ⓘ
surface form:
Boeshane Peninsula
|
| leadsTeam |
Gwen Cooper
ⓘ
Ianto Jones ⓘ Owen Harper ⓘ Toshiko Sato ⓘ |
| madeImmortalBy | Rose Tyler with the power of the Time Vortex ⓘ |
| notableAbility |
immortality
ⓘ
rapid regeneration from death ⓘ time travel ⓘ |
| notableStoryArc |
Torchwood
ⓘ
surface form:
Torchwood: Children of Earth
Torchwood ⓘ
surface form:
Torchwood: Miracle Day
|
| occupation |
Time Agent
ⓘ
Torchwood leader ⓘ con man ⓘ |
| personalityTrait |
charismatic
ⓘ
flirtatious ⓘ |
| portrayedBy | John Barrowman ⓘ |
| sexuality | omnisexual ⓘ |
| species | Human ⓘ |
| timePeriodOfOrigin | 51st century ⓘ |
| travelsWith |
Ninth Doctor
ⓘ
Tenth Doctor ⓘ The Doctor ⓘ
surface form:
Thirteenth Doctor
|
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: Captain Jack Harkness Description of subject: Captain Jack Harkness is a charismatic, time-traveling former Time Agent and immortal leader of the Torchwood Institute in the Doctor Who universe.
Referenced by (51)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Jack Harkness
this entity surface form:
Jack Harkness
this entity surface form:
Captain Jack Harkness – Doctor Who
this entity surface form:
Captain Jack Harkness – Torchwood
this entity surface form:
Jack Harkness
this entity surface form:
Jack Harkness
this entity surface form:
Jack Harkness
this entity surface form:
Jack Harkness
this entity surface form:
Jack Harkness
this entity surface form:
Jack Harkness
this entity surface form:
Jack Harkness
this entity surface form:
John Barrowman as Captain Jack Harkness
this entity surface form:
Jack Harkness
this entity surface form:
Jack Harkness
subject surface form:
Boeshane Peninsula
subject surface form:
Boeshane Peninsula
subject surface form:
Boeshane Peninsula