Iron Horse Regional Trail
E708512
The Iron Horse Regional Trail is a multi-use, paved rail-trail in California’s East Bay that follows a former railroad corridor through several communities, including Danville.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Iron Horse Regional Trail canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T8033969 — 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: Iron Horse Regional Trail Context triple: [Danville, California, traversedBy, Iron Horse Regional Trail]
-
A.
Indian Head Rail Trail
Indian Head Rail Trail is a multi-use recreational path in Charles County, Maryland, converted from a former railroad corridor and popular for walking, running, and cycling.
-
B.
Bruce Freeman Rail Trail
The Bruce Freeman Rail Trail is a multi-use recreational path in Massachusetts that follows a former railroad corridor through several communities, offering scenic routes for walking, running, and cycling.
-
C.
Oro-Medonte Rail Trail
The Oro-Medonte Rail Trail is a recreational multi-use trail in Oro-Medonte, Ontario, that follows a former railway corridor for activities like walking, cycling, and snowmobiling.
-
D.
Spruce Railroad Trail
Spruce Railroad Trail is a scenic hiking and biking path in Washington’s Olympic National Park that follows an old railroad grade along the shores of Lake Crescent.
-
E.
Wallkill Valley Rail Trail
The Wallkill Valley Rail Trail is a scenic multi-use path in New York’s Hudson Valley that follows a former railroad corridor through towns like New Paltz, offering hiking, biking, and nature viewing.
- 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: Iron Horse Regional Trail Target entity description: The Iron Horse Regional Trail is a multi-use, paved rail-trail in California’s East Bay that follows a former railroad corridor through several communities, including Danville.
-
A.
Indian Head Rail Trail
Indian Head Rail Trail is a multi-use recreational path in Charles County, Maryland, converted from a former railroad corridor and popular for walking, running, and cycling.
-
B.
Bruce Freeman Rail Trail
The Bruce Freeman Rail Trail is a multi-use recreational path in Massachusetts that follows a former railroad corridor through several communities, offering scenic routes for walking, running, and cycling.
-
C.
Oro-Medonte Rail Trail
The Oro-Medonte Rail Trail is a recreational multi-use trail in Oro-Medonte, Ontario, that follows a former railway corridor for activities like walking, cycling, and snowmobiling.
-
D.
Spruce Railroad Trail
Spruce Railroad Trail is a scenic hiking and biking path in Washington’s Olympic National Park that follows an old railroad grade along the shores of Lake Crescent.
-
E.
Wallkill Valley Rail Trail
The Wallkill Valley Rail Trail is a scenic multi-use path in New York’s Hudson Valley that follows a former railroad corridor through towns like New Paltz, offering hiking, biking, and nature viewing.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
rail trail
ⓘ
transportation corridor ⓘ |
| accessFee | free ⓘ |
| connectsTo |
BART stations in the East Bay
ⓘ
regional trail network in the East Bay ⓘ |
| follows | former Southern Pacific Railroad right-of-way ⓘ |
| formerUse | railroad corridor ⓘ |
| hasFeature |
access to parks along the corridor
ⓘ
access to schools and commercial areas ⓘ grade-separated road crossings in some segments ⓘ interpretive signage in some locations ⓘ street-level crossings with signals in some segments ⓘ |
| hasLighting | limited or none on most segments ⓘ |
| hasRestriction | motor vehicles generally prohibited on trail ⓘ |
| hasTrailheadsIn |
Danville, California
NERFINISHED
ⓘ
Dublin, California NERFINISHED ⓘ Pleasanton, California NERFINISHED ⓘ Walnut Creek, California NERFINISHED ⓘ |
| isPartOf | East Bay Regional Park District trail system NERFINISHED ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
East Bay NERFINISHED ⓘ San Francisco Bay Area ⓘ United States of America ⓘ
surface form:
United States
|
| notableFor |
conversion of historic rail corridor to recreational trail
ⓘ
linking multiple East Bay communities ⓘ |
| openTo | the public ⓘ |
| operator | East Bay Regional Park District NERFINISHED ⓘ |
| ownedBy | East Bay Regional Park District NERFINISHED ⓘ |
| passesThrough |
Alamo, California
NERFINISHED
ⓘ
Concord, California NERFINISHED ⓘ Danville, California NERFINISHED ⓘ Dublin, California NERFINISHED ⓘ Pleasant Hill, California NERFINISHED ⓘ Pleasanton, California NERFINISHED ⓘ San Ramon, California NERFINISHED ⓘ Walnut Creek, California NERFINISHED ⓘ unincorporated areas of Alameda County ⓘ unincorporated areas of Contra Costa County ⓘ |
| railroadPredecessor | Southern Pacific Railroad NERFINISHED ⓘ |
| regionServed |
Alameda County, California
NERFINISHED
ⓘ
Contra Costa County, California NERFINISHED ⓘ |
| surfaceType | paved ⓘ |
| usedFor |
bicycling
ⓘ
commuting ⓘ inline skating ⓘ running ⓘ walking ⓘ |
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: Iron Horse Regional Trail Description of subject: The Iron Horse Regional Trail is a multi-use, paved rail-trail in California’s East Bay that follows a former railroad corridor through several communities, including Danville.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.