Stuttgart 21
E193560
Stuttgart 21 is a large and controversial German rail and urban development project that involves transforming Stuttgart’s main train station into an underground through-station and redesigning the surrounding city area.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Stuttgart 21 canonical | 2 |
| Stuttgart 21 project | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1708799 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Stuttgart 21 Context triple: [Stuttgart, isProjectSiteOf, Stuttgart 21]
-
A.
Stuttgart S-Bahn
The Stuttgart S-Bahn is a rapid transit and commuter rail network serving Stuttgart and its surrounding region in the German state of Baden-Württemberg.
-
B.
BahnTower
BahnTower is a prominent high-rise office building in Berlin that serves as the headquarters of Deutsche Bahn and forms part of the modern Potsdamer Platz complex.
-
C.
Nuremberg–Würzburg railway
The Nuremberg–Würzburg railway is a major German main line in Bavaria that connects the cities of Nuremberg and Würzburg and forms part of an important north–south and east–west rail corridor.
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D.
Ulm–Sigmaringen railway
The Ulm–Sigmaringen railway is a regional rail line in the German state of Baden-Württemberg that connects the city of Ulm with Sigmaringen through the Swabian Jura.
-
E.
Nuremberg U-Bahn
The Nuremberg U-Bahn is the rapid transit system serving Nuremberg and its surrounding area in Germany, known for being one of the first networks to operate fully automated driverless trains.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Stuttgart 21 Target entity description: Stuttgart 21 is a large and controversial German rail and urban development project that involves transforming Stuttgart’s main train station into an underground through-station and redesigning the surrounding city area.
-
A.
Stuttgart S-Bahn
The Stuttgart S-Bahn is a rapid transit and commuter rail network serving Stuttgart and its surrounding region in the German state of Baden-Württemberg.
-
B.
BahnTower
BahnTower is a prominent high-rise office building in Berlin that serves as the headquarters of Deutsche Bahn and forms part of the modern Potsdamer Platz complex.
-
C.
Nuremberg–Würzburg railway
The Nuremberg–Würzburg railway is a major German main line in Bavaria that connects the cities of Nuremberg and Würzburg and forms part of an important north–south and east–west rail corridor.
-
D.
Ulm–Sigmaringen railway
The Ulm–Sigmaringen railway is a regional rail line in the German state of Baden-Württemberg that connects the city of Ulm with Sigmaringen through the Swabian Jura.
-
E.
Nuremberg U-Bahn
The Nuremberg U-Bahn is the rapid transit system serving Nuremberg and its surrounding area in Germany, known for being one of the first networks to operate fully automated driverless trains.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
railway infrastructure project
ⓘ
urban development project ⓘ |
| affects |
Unterer Schlossgarten
ⓘ
surface form:
Schlossgarten park area
Stuttgart cityscape ⓘ |
| aimsTo |
convert terminus station into through station
ⓘ
free inner-city land for development ⓘ improve long-distance rail connections ⓘ improve regional rail connections ⓘ |
| announced | 1994 ⓘ |
| characteristic |
controversial
ⓘ
cost overruns ⓘ delays ⓘ large-scale protests ⓘ |
| constructionStart | 2010 ⓘ |
| country | Germany ⓘ |
| developer | Deutsche Bahn ⓘ |
| includes |
new approach tracks
ⓘ
new office and commercial buildings ⓘ new parks and public spaces ⓘ new railway tunnels ⓘ new residential buildings ⓘ new underground platforms ⓘ redesign of station forecourt ⓘ redevelopment of former railway land ⓘ |
| involves | Stuttgart Hauptbahnhof ⓘ |
| locatedIn |
Baden-Württemberg
ⓘ
Europe ⓘ Stuttgart ⓘ |
| mainOperator | Deutsche Bahn ⓘ |
| opposedBy |
citizen initiatives
ⓘ
environmental groups ⓘ |
| partOf | German railway network ⓘ |
| projectType |
through-station conversion
ⓘ
tunnel construction ⓘ underground station construction ⓘ urban redevelopment ⓘ |
| railwayElectrification | 15 kV 16.7 Hz AC overhead line ⓘ |
| railwayGauge | standard gauge ⓘ |
| reasonForOpposition |
capacity and safety concerns
ⓘ
cost concerns ⓘ environmental concerns ⓘ heritage conservation concerns ⓘ |
| relatedTo |
Stuttgart–Ulm railway
ⓘ
surface form:
Wendlingen–Ulm high-speed railway
|
| startDate | 1990s planning phase ⓘ |
| status | under construction ⓘ |
| supportedBy |
Deutsche Bahn
ⓘ
city of Stuttgart administration (various terms) ⓘ State Government of Baden-Württemberg ⓘ
surface form:
state government of Baden-Württemberg (various terms)
|
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Stuttgart 21 Description of subject: Stuttgart 21 is a large and controversial German rail and urban development project that involves transforming Stuttgart’s main train station into an underground through-station and redesigning the surrounding city area.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Stuttgart 21 project