MF 77
E207261
MF 77 is a steel-wheeled electric multiple unit train used on several lines of the Paris Métro, introduced in the late 1970s to modernize the network’s rolling stock.
All labels observed (1)
| Label | Occurrences |
|---|---|
| MF 77 canonical | 7 |
How this entity was disambiguated
This entity first appeared as the object of triple T1841561 — 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: MF 77 Context triple: [Paris Metro, hasRollingStock, MF 77]
-
A.
MF 67
MF 67 is a class of steel-wheeled electric multiple unit trains that have long served as a primary rolling stock type on the Paris Métro.
-
B.
M-72
M-72 is a state highway in northern Michigan that serves as a key east–west route connecting Traverse City with several inland communities and recreational areas.
-
C.
MF 01
MF 01 is a class of modern steel-wheeled electric multiple unit trains used on several lines of the Paris Métro.
-
D.
M-45
M-45 is a state highway in Michigan that runs east–west through the Grand Rapids area toward the Lake Michigan shoreline.
-
E.
M-22
M-22 is a scenic state highway in Michigan renowned for its picturesque route along the Lake Michigan shoreline and through the Leelanau Peninsula near Traverse City.
- 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: MF 77 Target entity description: MF 77 is a steel-wheeled electric multiple unit train used on several lines of the Paris Métro, introduced in the late 1970s to modernize the network’s rolling stock.
-
A.
MF 67
MF 67 is a class of steel-wheeled electric multiple unit trains that have long served as a primary rolling stock type on the Paris Métro.
-
B.
M-72
M-72 is a state highway in northern Michigan that serves as a key east–west route connecting Traverse City with several inland communities and recreational areas.
-
C.
MF 01
MF 01 is a class of modern steel-wheeled electric multiple unit trains used on several lines of the Paris Métro.
-
D.
M-45
M-45 is a state highway in Michigan that runs east–west through the Grand Rapids area toward the Lake Michigan shoreline.
-
E.
M-22
M-22 is a scenic state highway in Michigan renowned for its picturesque route along the Lake Michigan shoreline and through the Leelanau Peninsula near Traverse City.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Paris Métro rolling stock
ⓘ
electric multiple unit ⓘ steel-wheeled metro train ⓘ |
| brakeType | electro-pneumatic brakes ⓘ |
| carBodyMaterial | steel ⓘ |
| controlType | manual driving ⓘ |
| country | France ⓘ |
| couplingType |
Scharfenberg coupler
ⓘ
surface form:
Scharfenberg-type coupler
|
| depot |
Château de Vincennes
ⓘ
surface form:
Château de Vincennes depot
Châtillon-Montrouge depot ⓘ La Villette depot ⓘ |
| designedBy |
RATP group
ⓘ
surface form:
RATP
|
| designedFor |
airier and more comfortable interiors than older stock
ⓘ
longer interstation distances ⓘ suburban-type metro services ⓘ |
| doorType | sliding doors ⓘ |
| electricSystem | 750 V DC third rail ⓘ |
| floorType | high-floor ⓘ |
| formation | 5-car trainset ⓘ |
| introduced |
1978
ⓘ
late 1970s ⓘ |
| lengthPerTrainset | about 90 m ⓘ |
| lineServed |
Paris Métro Line 13
ⓘ
Paris Métro Line 7 ⓘ Paris Métro Line 8 ⓘ |
| manufacturer |
Alcatel Alsthom
ⓘ
surface form:
Alsthom
Francorail ⓘ Jeumont-Schneider ⓘ |
| network |
Paris Metro
ⓘ
surface form:
Paris Métro
|
| operator |
RATP group
ⓘ
surface form:
RATP
RATP group ⓘ
surface form:
Régie Autonome des Transports Parisiens
|
| originalLineDeployment |
Paris Métro Line 13
ⓘ
Paris Métro Line 7 ⓘ Paris Métro Line 8 ⓘ |
| owner |
RATP group
ⓘ
surface form:
RATP
|
| powerCollectionMethod | third rail ⓘ |
| purpose | modernize Paris Métro rolling stock ⓘ |
| safetySystem | automatic train protection ⓘ |
| serviceArea |
Île-de-France region
ⓘ
surface form:
Île-de-France
|
| serviceStatus | in service ⓘ |
| serviceType |
metro
ⓘ
rapid transit ⓘ |
| successor |
MF 01
ⓘ
MF 88 ⓘ |
| trackGauge |
1435 mm
ⓘ
standard gauge ⓘ |
| tractionType | electric ⓘ |
| UICClassification | Bo′Bo′+2′2′+Bo′Bo′+2′2′+Bo′Bo′ ⓘ |
| wheelType | steel wheels ⓘ |
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: MF 77 Description of subject: MF 77 is a steel-wheeled electric multiple unit train used on several lines of the Paris Métro, introduced in the late 1970s to modernize the network’s rolling stock.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Paris Métro Line 13