Triple
T18832930
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Mount Tamalpais summit |
E460579
|
entity |
| Predicate | accessedBy |
P1985
|
FINISHED |
| Object |
Old Railroad Grade trail
Old Railroad Grade trail is a popular multi-use path on Mount Tamalpais in Marin County, California, following a historic railway route with expansive views of the Bay Area.
|
E1345278
|
NE FINISHED |
How this triple was built (4 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: Old Railroad Grade trail | Statement: [Mount Tamalpais summit, accessedBy, Old Railroad Grade trail]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Old Railroad Grade trail Context triple: [Mount Tamalpais summit, accessedBy, Old Railroad Grade trail]
-
A.
Old Rail Trail
Old Rail Trail is a scenic multi-use path in Tiburon, California, that follows a former railroad corridor along the San Francisco Bay shoreline.
-
B.
Railroad Grade Trail
Railroad Grade Trail is a hiking path within Washington’s Wallace Falls State Park that follows an old railroad grade through forested terrain and scenic river valleys.
-
C.
Heritage Rail Trail
Heritage Rail Trail is a multi-use recreational path in Hilliard, Ohio, that follows a former railroad corridor and is popular for walking, running, and cycling.
-
D.
Switchback Railroad Trail
Switchback Railroad Trail is a historic rail-trail in Jim Thorpe, Pennsylvania, popular for hiking and biking along the route of one of the nation’s earliest gravity railroads.
-
E.
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.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Old Railroad Grade trail Triple: [Mount Tamalpais summit, accessedBy, Old Railroad Grade trail]
Generated description
Old Railroad Grade trail is a popular multi-use path on Mount Tamalpais in Marin County, California, following a historic railway route with expansive views of the Bay Area.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Old Railroad Grade trail Target entity description: Old Railroad Grade trail is a popular multi-use path on Mount Tamalpais in Marin County, California, following a historic railway route with expansive views of the Bay Area.
-
A.
Old Rail Trail
Old Rail Trail is a scenic multi-use path in Tiburon, California, that follows a former railroad corridor along the San Francisco Bay shoreline.
-
B.
Railroad Grade Trail
Railroad Grade Trail is a hiking path within Washington’s Wallace Falls State Park that follows an old railroad grade through forested terrain and scenic river valleys.
-
C.
Heritage Rail Trail
Heritage Rail Trail is a multi-use recreational path in Hilliard, Ohio, that follows a former railroad corridor and is popular for walking, running, and cycling.
-
D.
Switchback Railroad Trail
Switchback Railroad Trail is a historic rail-trail in Jim Thorpe, Pennsylvania, popular for hiking and biking along the route of one of the nation’s earliest gravity railroads.
-
E.
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.
- F. None of above. chosen
Provenance (5 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_69d8dcf94c288190a06dea029ae4b223 |
completed | April 10, 2026, 11:20 a.m. |
| NER | Named-entity recognition | batch_69e5a99b540c8190a29e5f9d56791d41 |
completed | April 20, 2026, 4:20 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a05676782048190810125e6b9317bcd |
completed | May 14, 2026, 6:10 a.m. |
| NEDg | Description generation | batch_6a05692c88c481909a7e321a4975e12f |
completed | May 14, 2026, 6:18 a.m. |
| NED2 | Entity disambiguation (via description) | batch_6a0569c79b5c8190a63326c332674dd7 |
completed | May 14, 2026, 6:20 a.m. |
Created at: April 10, 2026, 11:56 a.m.