Triple
T10409631
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Mariefred |
E245352
|
entity |
| Predicate | hasTouristAttraction |
P530
|
FINISHED |
| Object |
steam railway Mariefred–Läggesta
The steam railway Mariefred–Läggesta is a heritage narrow-gauge railway in Sweden that operates historic steam trains between the town of Mariefred and Läggesta, offering visitors a nostalgic travel experience.
|
E861978
|
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: steam railway Mariefred–Läggesta | Statement: [Mariefred, hasTouristAttraction, steam railway Mariefred–Läggesta]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: steam railway Mariefred–Läggesta Context triple: [Mariefred, hasTouristAttraction, steam railway Mariefred–Läggesta]
-
A.
Mälartåg
Mälartåg is a regional train operator in Sweden that provides passenger rail services across the Mälardalen region, including connections via Arlanda Central Station.
-
B.
Stäket station
Stäket station is a local railway stop serving the Stäket area within Järfälla Municipality in the Stockholm region of Sweden.
-
C.
Ostkustbanan railway line
The Ostkustbanan railway line is a major Swedish rail route running along the country’s east coast, connecting Stockholm with northern regions and serving numerous municipalities along the way.
-
D.
Märsta Station
Märsta Station is a key suburban railway hub in the town of Märsta, serving as a northern terminus and important node in the Stockholm commuter rail network.
-
E.
Saltsjöbanan
Saltsjöbanan is a suburban railway line in the Stockholm area that connects central Stockholm with the eastern suburbs, including parts of Nacka Municipality.
- 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: steam railway Mariefred–Läggesta Triple: [Mariefred, hasTouristAttraction, steam railway Mariefred–Läggesta]
Generated description
The steam railway Mariefred–Läggesta is a heritage narrow-gauge railway in Sweden that operates historic steam trains between the town of Mariefred and Läggesta, offering visitors a nostalgic travel experience.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: steam railway Mariefred–Läggesta Target entity description: The steam railway Mariefred–Läggesta is a heritage narrow-gauge railway in Sweden that operates historic steam trains between the town of Mariefred and Läggesta, offering visitors a nostalgic travel experience.
-
A.
Mälartåg
Mälartåg is a regional train operator in Sweden that provides passenger rail services across the Mälardalen region, including connections via Arlanda Central Station.
-
B.
Stäket station
Stäket station is a local railway stop serving the Stäket area within Järfälla Municipality in the Stockholm region of Sweden.
-
C.
Ostkustbanan railway line
The Ostkustbanan railway line is a major Swedish rail route running along the country’s east coast, connecting Stockholm with northern regions and serving numerous municipalities along the way.
-
D.
Märsta Station
Märsta Station is a key suburban railway hub in the town of Märsta, serving as a northern terminus and important node in the Stockholm commuter rail network.
-
E.
Saltsjöbanan
Saltsjöbanan is a suburban railway line in the Stockholm area that connects central Stockholm with the eastern suburbs, including parts of Nacka Municipality.
- 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_69d381be340c8190b05998703d42d224 |
completed | April 6, 2026, 9:49 a.m. |
| NER | Named-entity recognition | batch_69d4e9faa97c819092cadedadabe26bf |
completed | April 7, 2026, 11:26 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69d7fbf1c428819099ca359309c4c836 |
completed | April 9, 2026, 7:20 p.m. |
| NEDg | Description generation | batch_69d822d6a0188190a7ee6de5aab50486 |
completed | April 9, 2026, 10:06 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69d859e40bf88190a6dc8deed3049d31 |
completed | April 10, 2026, 2:01 a.m. |
Created at: April 6, 2026, 12:09 p.m.