Triple
T8983582
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | San Ramon, California |
E214595
|
entity |
| Predicate | hasRegionalTrailAccess |
P2515
|
FINISHED |
| Object | Iron Horse Regional Trail |
E708512
|
NE FINISHED |
How this triple was built (3 steps)
Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.
NER
Named-entity recognition
gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Iron Horse Regional Trail | Statement: [San Ramon, California, hasRegionalTrailAccess, Iron Horse Regional Trail]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Iron Horse Regional Trail Context triple: [San Ramon, California, hasRegionalTrailAccess, Iron Horse Regional Trail]
-
A.
Iron Horse Regional Trail
chosen
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.
-
B.
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.
-
C.
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.
-
D.
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.
-
E.
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.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: hasRegionalTrailAccess Context triple: [San Ramon, California, hasRegionalTrailAccess, Iron Horse Regional Trail]
-
A.
hasRailTrail
chosen
Indicates that one location or entity possesses, includes, or is connected by a rail trail (a recreational trail converted from or running along a former or existing railway corridor) to another location or entity.
-
B.
isPartOfTrailSystem
Indicates that something belongs to, or is included within, a larger trail network or trail system.
-
C.
isRailTrail
Indicates that a path or route is a rail trail, meaning it follows or repurposes a former or existing railway corridor for recreational or transportation use.
-
D.
hasBackcountryAccess
Indicates that an entity provides or permits access to undeveloped, remote, or wilderness areas typically used for backcountry activities.
-
E.
hasTrailheads
Indicates that one location or area contains or provides access points where trails begin.
- F. None of above.
Provenance (4 batches)
The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.
| Step | Stage | Batch ID | Status | When |
|---|---|---|---|---|
| creating | Elicitation | batch_69ca839f76bc8190a4b7123cdd682199 |
completed | March 30, 2026, 2:07 p.m. |
| NER | Named-entity recognition | batch_69cc67eb3cfc8190900a8253cc44621c |
completed | April 1, 2026, 12:33 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69cfd0b89a7481908f747043d2a68a37 |
completed | April 3, 2026, 2:37 p.m. |
| PD | Predicate disambiguation | batch_69cc5edba0f88190b97401636a076d7a |
completed | March 31, 2026, 11:55 p.m. |
Created at: March 30, 2026, 7:03 p.m.