Black Diamond
E611093
Black Diamond was the historic coal-mining town in Contra Costa County, California, that later became part of the modern city of Pittsburg.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Black Diamond canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6676252 — 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: Black Diamond Context triple: [Pittsburg, California, formerName, Black Diamond]
-
A.
Black Diamond
Black Diamond was an early steam locomotive associated with the pioneering Stockton and Darlington Railway, one of the first public railways to use steam power for freight and passengers.
-
B.
Carbon Glacier
Carbon Glacier is a major valley glacier on the north slope of Mount Rainier in Washington, notable for its great thickness and low terminus elevation.
-
C.
Denali Star
Denali Star is a flagship Alaska Railroad passenger train that runs seasonally between Anchorage and Fairbanks, offering scenic access to Denali National Park.
-
D.
Snow Summit
Snow Summit is a popular Southern California ski and snowboard resort located in the Big Bear Lake area of the San Bernardino Mountains.
-
E.
White Glacier
White Glacier is a prominent glacier located on Mount Olympus, known for its extensive ice fields and alpine terrain.
- 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: Black Diamond Target entity description: Black Diamond was the historic coal-mining town in Contra Costa County, California, that later became part of the modern city of Pittsburg.
-
A.
Black Diamond
Black Diamond was an early steam locomotive associated with the pioneering Stockton and Darlington Railway, one of the first public railways to use steam power for freight and passengers.
-
B.
Carbon Glacier
Carbon Glacier is a major valley glacier on the north slope of Mount Rainier in Washington, notable for its great thickness and low terminus elevation.
-
C.
Denali Star
Denali Star is a flagship Alaska Railroad passenger train that runs seasonally between Anchorage and Fairbanks, offering scenic access to Denali National Park.
-
D.
Snow Summit
Snow Summit is a popular Southern California ski and snowboard resort located in the Big Bear Lake area of the San Bernardino Mountains.
-
E.
White Glacier
White Glacier is a prominent glacier located on Mount Olympus, known for its extensive ice fields and alpine terrain.
- F. None of above. chosen
Statements (25)
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: Black Diamond Description of subject: Black Diamond was the historic coal-mining town in Contra Costa County, California, that later became part of the modern city of Pittsburg.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.