Triple
T2781281
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Frankfurt Hauptwache station |
E61699
|
entity |
| Predicate | servedBy |
P82
|
FINISHED |
| Object |
U2 line
The U2 line is a rapid transit route of the Frankfurt U-Bahn network that connects central Frankfurt with several outlying districts.
|
E297622
|
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: U2 line | Statement: [Frankfurt Hauptwache station, servedBy, U2 line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: U2 line Context triple: [Frankfurt Hauptwache station, servedBy, U2 line]
-
A.
Upfield line
The Upfield line is a suburban railway line in Melbourne, Australia, running from Flinders Street Station through the city’s northern suburbs to Upfield.
-
B.
Premier Line
Premier Line is the nickname of the London and North Western Railway, historically one of Britain’s largest and most prestigious railway companies.
-
C.
Bridge Line
Bridge Line was a former rapid transit service in the Philadelphia–Camden area that operated across the Benjamin Franklin Bridge before being replaced and expanded by the PATCO Speedline.
-
D.
West Side Line
The West Side Line is a historic freight and passenger rail line on Manhattan’s west side that once served New York’s industrial waterfront and later became partly repurposed as the High Line park.
-
E.
Line 2
Line 2 is a major east–west rapid transit route of the Shanghai Metro that connects key commercial, residential, and airport hubs across the city.
- 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: U2 line Triple: [Frankfurt Hauptwache station, servedBy, U2 line]
Generated description
The U2 line is a rapid transit route of the Frankfurt U-Bahn network that connects central Frankfurt with several outlying districts.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: U2 line Target entity description: The U2 line is a rapid transit route of the Frankfurt U-Bahn network that connects central Frankfurt with several outlying districts.
-
A.
Upfield line
The Upfield line is a suburban railway line in Melbourne, Australia, running from Flinders Street Station through the city’s northern suburbs to Upfield.
-
B.
Premier Line
Premier Line is the nickname of the London and North Western Railway, historically one of Britain’s largest and most prestigious railway companies.
-
C.
Bridge Line
Bridge Line was a former rapid transit service in the Philadelphia–Camden area that operated across the Benjamin Franklin Bridge before being replaced and expanded by the PATCO Speedline.
-
D.
West Side Line
The West Side Line is a historic freight and passenger rail line on Manhattan’s west side that once served New York’s industrial waterfront and later became partly repurposed as the High Line park.
-
E.
Line 2
Line 2 is a major east–west rapid transit route of the Shanghai Metro that connects key commercial, residential, and airport hubs across the city.
- 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_69ab4b7e43c48190997b8fc8fb1663ab |
completed | March 6, 2026, 9:47 p.m. |
| NER | Named-entity recognition | batch_69abdd997ebc8190bff88fe549827615 |
completed | March 7, 2026, 8:11 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69afc05f4e7881908bf5b6f7df331041 |
completed | March 10, 2026, 6:55 a.m. |
| NEDg | Description generation | batch_69afc1d3bec0819087bb787b7f570ddc |
completed | March 10, 2026, 7:01 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69afc229caf88190a26959c27e6a1a9e |
completed | March 10, 2026, 7:03 a.m. |
Created at: March 6, 2026, 9:57 p.m.