Mid-Corridor Trench
E123551
The Mid-Corridor Trench is a below-grade freight rail trench in the Los Angeles area that carries trains through the central portion of the Alameda Corridor to reduce surface-level rail congestion and road crossings.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mid-Corridor Trench canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1088814 — 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: Mid-Corridor Trench Context triple: [Alameda Corridor, hasComponent, Mid-Corridor Trench]
-
A.
Malinta Tunnel
Malinta Tunnel is a historic underground complex on Corregidor Island in the Philippines that served as a bomb-proof headquarters and hospital for American and Filipino forces during World War II.
-
B.
Solntsevskaya Line
The Solntsevskaya Line is a line of the Moscow Metro system serving western and southwestern districts of Moscow with modern rapid transit connections.
-
C.
Geneva Spur
Geneva Spur is a branch of the Illinois Prairie Path, a multi-use recreational trail in the Chicago metropolitan area.
-
D.
Shandaken Tunnel
The Shandaken Tunnel is an aqueduct in New York State that diverts water from the Schoharie Reservoir to the Esopus Creek as part of the New York City water supply system.
-
E.
Batong Line
The Batong Line is a rapid transit line in Beijing that extends the Beijing Subway network eastward into the suburban Tongzhou District.
- 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: Mid-Corridor Trench Target entity description: The Mid-Corridor Trench is a below-grade freight rail trench in the Los Angeles area that carries trains through the central portion of the Alameda Corridor to reduce surface-level rail congestion and road crossings.
-
A.
Malinta Tunnel
Malinta Tunnel is a historic underground complex on Corregidor Island in the Philippines that served as a bomb-proof headquarters and hospital for American and Filipino forces during World War II.
-
B.
Solntsevskaya Line
The Solntsevskaya Line is a line of the Moscow Metro system serving western and southwestern districts of Moscow with modern rapid transit connections.
-
C.
Geneva Spur
Geneva Spur is a branch of the Illinois Prairie Path, a multi-use recreational trail in the Chicago metropolitan area.
-
D.
Shandaken Tunnel
The Shandaken Tunnel is an aqueduct in New York State that diverts water from the Schoharie Reservoir to the Esopus Creek as part of the New York City water supply system.
-
E.
Batong Line
The Batong Line is a rapid transit line in Beijing that extends the Beijing Subway network eastward into the suburban Tongzhou District.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
freight rail trench
ⓘ
grade separation project ⓘ rail infrastructure ⓘ |
| associatedWith |
Alameda Corridor Transportation Authority
ⓘ
Port of Long Beach ⓘ Port of Los Angeles ⓘ |
| connectsWith |
northern portion of Alameda Corridor
ⓘ
southern portion of Alameda Corridor ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| feature |
below-grade rail alignment
ⓘ
grade-separated road crossings ⓘ multiple tracks for freight trains ⓘ |
| impact |
improved safety by separating trains from road traffic
ⓘ
increased rail capacity along the Alameda Corridor ⓘ reduction of traffic delays at former grade crossings ⓘ |
| location |
Los Angeles County
ⓘ
surface form:
Los Angeles County, California
Greater Los Angeles Area ⓘ
surface form:
Los Angeles metropolitan area
|
| partOf |
Alameda Corridor
ⓘ
freight transportation network serving the Ports of Los Angeles and Long Beach ⓘ |
| purpose |
to carry freight trains below grade through the central portion of the Alameda Corridor
ⓘ
to eliminate or reduce at-grade road-rail crossings ⓘ to improve freight rail efficiency between the Ports of Los Angeles and Long Beach and the national rail network ⓘ to reduce surface-level rail congestion ⓘ |
| usedBy | freight railroads ⓘ |
| usedFor | freight rail operations ⓘ |
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: Mid-Corridor Trench Description of subject: The Mid-Corridor Trench is a below-grade freight rail trench in the Los Angeles area that carries trains through the central portion of the Alameda Corridor to reduce surface-level rail congestion and road crossings.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.