Triple
T15872305
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | The Grand Central Depot of the Underground Railroad |
E384858
|
entity |
| Predicate | connectedTo |
P37
|
FINISHED |
| Object | Underground Railroad routes to Canada |
E321996
|
NE FINISHED |
How this triple was built (2 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: Underground Railroad routes to Canada | Statement: [The Grand Central Depot of the Underground Railroad, connectedTo, Underground Railroad routes to Canada]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Underground Railroad routes to Canada Context triple: [The Grand Central Depot of the Underground Railroad, connectedTo, Underground Railroad routes to Canada]
-
A.
Underground Railroad routes
chosen
Underground Railroad routes were clandestine paths and safe houses used by enslaved African Americans in the 19th-century United States to escape to free states and Canada with the help of abolitionists.
-
B.
Underground Railroad in Connecticut
The Underground Railroad in Connecticut was a clandestine network of routes, safe houses, and abolitionist allies that helped enslaved African Americans escape to freedom in the 19th century.
-
C.
The Grand Central Depot of the Underground Railroad
The Grand Central Depot of the Underground Railroad is a historic nickname for Plymouth Church in Brooklyn, renowned for its central role in sheltering and aiding enslaved people seeking freedom before the Civil War.
-
D.
Harriet Tubman Byway
Harriet Tubman Byway is a scenic driving route and heritage trail that traces the life, Underground Railroad activities, and legacy of Harriet Tubman across Maryland’s Eastern Shore.
-
E.
Overland Stage route
The Overland Stage route was a 19th-century stagecoach line that carried mail, passengers, and freight across the American West between the Missouri River and California.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69d86da4e86481909f1325fdc971b5ec |
completed | April 10, 2026, 3:25 a.m. |
| NER | Named-entity recognition | batch_69e155faefd08190af634867370796b3 |
completed | April 16, 2026, 9:34 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ffa94ca15c8190bdd5fe0a30b54b51 |
completed | May 9, 2026, 9:38 p.m. |
Created at: April 10, 2026, 4:51 a.m.