Twin Peaks Tunnel

E374328

The Twin Peaks Tunnel is a historic light rail tunnel in San Francisco that carries Muni Metro trains between downtown and the western neighborhoods beneath Twin Peaks.

Try in SPARQL Jump to: Surface forms Statements Referenced by

All labels observed (1)

Label Occurrences
Twin Peaks Tunnel canonical 5

Statements (29)

Predicate Object
instanceOf light rail tunnel
railway tunnel
transport infrastructure
connects Downtown San Francisco
surface form: downtown San Francisco

western neighborhoods of San Francisco
continent North America
country United States of America
surface form: United States
electrification overhead lines
endPoint West Portal area of San Francisco
hasStation Castro Station
Forest Hill Station
West Portal Station
historic true
locatedIn California, United States
surface form: California

San Francisco
United States of America
surface form: United States
locatedInTimeZone Pacific Time Zone
material concrete
operator San Francisco Municipal Transportation Agency
owner San Francisco Municipal Transportation Agency
partOf Muni Metro
surface form: Muni Metro system
passesUnder Twin Peaks
publicTransitMode light rail
railGauge standard gauge
serves Muni Metro
startPoint Castro Street area
surface form: Castro Street area of San Francisco
status in use
usedFor light rail traffic
public transportation

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: Twin Peaks Tunnel
Description of subject: The Twin Peaks Tunnel is a historic light rail tunnel in San Francisco that carries Muni Metro trains between downtown and the western neighborhoods beneath Twin Peaks.

Referenced by (5)

Full triples — surface form annotated when it differs from this entity's canonical label.

Market Street subway connectsTo Twin Peaks Tunnel
Muni Metro J Church line usesInfrastructure Twin Peaks Tunnel
Muni Metro lines serves Twin Peaks Tunnel