Cal
E949036
Cal is the first name of Cal Henderson, a British software engineer best known as the co-founder and CTO of Slack.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Cal canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T11855393 — 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: Cal Context triple: [Cal Henderson, givenName, Cal]
-
A.
Cal
Cal is the commonly used short name for the University of California, Berkeley and its associated athletic programs.
-
B.
Cal
Cal is the nickname and given name of Cal McNair, the American businessman and principal owner of the NFL’s Houston Texans.
-
C.
CAL
CAL is the station code for California station on the Green Line transit system.
-
D.
CAL
CAL is the ICAO airline designator used to identify China Airlines in international aviation operations.
-
E.
CAL
CAL was the stock ticker symbol for Continental Airlines, a major U.S. airline that later merged with United Airlines.
- 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: Cal Target entity description: Cal is the first name of Cal Henderson, a British software engineer best known as the co-founder and CTO of Slack.
-
A.
Cal
Cal is the commonly used short name for the University of California, Berkeley and its associated athletic programs.
-
B.
Cal
Cal is the nickname and given name of Cal McNair, the American businessman and principal owner of the NFL’s Houston Texans.
-
C.
CAL
CAL is the ICAO airline designator used to identify China Airlines in international aviation operations.
-
D.
CAL
CAL is the station code for California station on the Green Line transit system.
-
E.
CAL
CAL was the stock ticker symbol for Continental Airlines, a major U.S. airline that later merged with United Airlines.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
human
ⓘ
software engineer ⓘ technology entrepreneur ⓘ |
| areaOfInfluence |
enterprise collaboration tools
ⓘ
software industry ⓘ |
| basedIn |
United States
ⓘ
linked to:
United States of America
|
| coFounded | Slack ⓘ |
| countryOfCitizenship | United Kingdom ⓘ |
| employer |
Slack Technologies
ⓘ
linked to:
Slack
|
| familyName | Henderson ⓘ |
| fieldOfWork |
collaboration software
ⓘ
computer programming ⓘ internet technology ⓘ messaging platforms ⓘ software engineering ⓘ |
| gender | male ⓘ |
| givenName | Cal ⓘ |
| hasFirstName | Cal ⓘ |
| hasLastName | Henderson ⓘ |
| knownFor |
being CTO of Slack
ⓘ
being co-founder of Slack ⓘ |
| languageSpoken | English ⓘ |
| nationality | British ⓘ |
| notableAchievement | co-founding Slack, a widely used workplace communication platform ⓘ |
| notableRole | technical leadership at Slack ⓘ |
| notableWork | Slack ⓘ |
| occupation |
chief technology officer
ⓘ
computer programmer ⓘ entrepreneur ⓘ software engineer ⓘ |
| positionHeld | Chief Technology Officer of Slack ⓘ |
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: Cal Description of subject: Cal is the first name of Cal Henderson, a British software engineer best known as the co-founder and CTO of Slack.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Cal