Triple
T5421448
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Altadena, California |
E121259
|
entity |
| Predicate | hasLandmark |
P105
|
FINISHED |
| Object |
Mount Lowe Railway historical area
Mount Lowe Railway historical area is a historic mountain railway site in the San Gabriel Mountains that preserves remnants of a once-popular scenic electric railway and resort complex above Altadena, California.
|
E519645
|
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: Mount Lowe Railway historical area | Statement: [Altadena, California, hasLandmark, Mount Lowe Railway historical area]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Mount Lowe Railway historical area Context triple: [Altadena, California, hasLandmark, Mount Lowe Railway historical area]
-
A.
Incline Railway
Incline Railway is a historic funicular railway in Chattanooga, Tennessee, known for its steep ascent up Lookout Mountain and its popularity as a scenic tourist attraction.
-
B.
Yosemite Mountain Sugar Pine Railroad
Yosemite Mountain Sugar Pine Railroad is a historic narrow-gauge tourist railway near Yosemite National Park that offers scenic steam train rides through the Sierra Nevada forest.
-
C.
Tallac Historic Site
Tallac Historic Site is a preserved estate area on the south shore of Lake Tahoe featuring restored early-20th-century summer homes, gardens, and cultural exhibits.
-
D.
Santa Susana Pass State Historic Park
Santa Susana Pass State Historic Park is a California state park preserving rugged canyons, historic travel routes, and native habitats at the western end of the San Fernando Valley.
-
E.
Mount Tamalpais Scenic Railway
Mount Tamalpais Scenic Railway was a historic early-20th-century tourist railroad in Marin County, California, famed for its winding “Crookedest Railroad in the World” route to the summit of Mount Tamalpais.
- 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: Mount Lowe Railway historical area Triple: [Altadena, California, hasLandmark, Mount Lowe Railway historical area]
Generated description
Mount Lowe Railway historical area is a historic mountain railway site in the San Gabriel Mountains that preserves remnants of a once-popular scenic electric railway and resort complex above Altadena, California.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Mount Lowe Railway historical area Target entity description: Mount Lowe Railway historical area is a historic mountain railway site in the San Gabriel Mountains that preserves remnants of a once-popular scenic electric railway and resort complex above Altadena, California.
-
A.
Incline Railway
Incline Railway is a historic funicular railway in Chattanooga, Tennessee, known for its steep ascent up Lookout Mountain and its popularity as a scenic tourist attraction.
-
B.
Yosemite Mountain Sugar Pine Railroad
Yosemite Mountain Sugar Pine Railroad is a historic narrow-gauge tourist railway near Yosemite National Park that offers scenic steam train rides through the Sierra Nevada forest.
-
C.
Tallac Historic Site
Tallac Historic Site is a preserved estate area on the south shore of Lake Tahoe featuring restored early-20th-century summer homes, gardens, and cultural exhibits.
-
D.
Santa Susana Pass State Historic Park
Santa Susana Pass State Historic Park is a California state park preserving rugged canyons, historic travel routes, and native habitats at the western end of the San Fernando Valley.
-
E.
Mount Tamalpais Scenic Railway
Mount Tamalpais Scenic Railway was a historic early-20th-century tourist railroad in Marin County, California, famed for its winding “Crookedest Railroad in the World” route to the summit of Mount Tamalpais.
- 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_69bd463b58d88190b258261573de9e91 |
completed | March 20, 2026, 1:06 p.m. |
| NER | Named-entity recognition | batch_69bd87eac41481908a4982db5d119edd |
completed | March 20, 2026, 5:46 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69bf3ab7f6b481908fead172fbdafe36 |
completed | March 22, 2026, 12:41 a.m. |
| NEDg | Description generation | batch_69bf3bc4b1e08190a7574b3ec67823e4 |
completed | March 22, 2026, 12:45 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69bf3c4530288190924b4c38d7b1fb70 |
completed | March 22, 2026, 12:48 a.m. |
Created at: March 20, 2026, 2:06 p.m.