MP-68 trains
E443824
MP-68 trains are a class of rubber-tyred metro rolling stock that have operated on Mexico City’s Metro system since the late 1960s.
All labels observed (2)
| Label | Occurrences |
|---|---|
| MP-68 trains canonical | 3 |
| NM-79 trains | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4481837 — 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: MP-68 trains Context triple: [Line 2 (Mexico City Metro), usesRollingStock, MP-68 trains]
-
A.
M100 series trains
The M100 series trains are the original electric multiple units that have operated on the Helsinki Metro since its opening, known for their robust design and long service life.
-
B.
M200 series trains
The M200 series trains are a fleet of modern electric multiple units operating on the Helsinki Metro system in Finland.
-
C.
M300 series trains
The M300 series trains are a modern fleet of metro trains operating on the Helsinki Metro, designed to provide efficient, high-capacity urban rail transport.
-
D.
MF 67 trains
MF 67 trains are a long-serving class of steel-wheeled electric multiple units used extensively across the Paris Métro network.
-
E.
Class 800 trains
Class 800 trains are modern bi-mode high-speed multiple units used on Britain’s mainline rail network, notably on intercity routes operated by companies such as London North Eastern Railway.
- 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: MP-68 trains Target entity description: MP-68 trains are a class of rubber-tyred metro rolling stock that have operated on Mexico City’s Metro system since the late 1960s.
-
A.
M100 series trains
The M100 series trains are the original electric multiple units that have operated on the Helsinki Metro since its opening, known for their robust design and long service life.
-
B.
M200 series trains
The M200 series trains are a fleet of modern electric multiple units operating on the Helsinki Metro system in Finland.
-
C.
M300 series trains
The M300 series trains are a modern fleet of metro trains operating on the Helsinki Metro, designed to provide efficient, high-capacity urban rail transport.
-
D.
MF 67 trains
MF 67 trains are a long-serving class of steel-wheeled electric multiple units used extensively across the Paris Métro network.
-
E.
Class 800 trains
Class 800 trains are modern bi-mode high-speed multiple units used on Britain’s mainline rail network, notably on intercity routes operated by companies such as London North Eastern Railway.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Mexico City Metro rolling stock
ⓘ
rolling stock class ⓘ rubber-tyred metro train ⓘ |
| belongsToCategory |
Mexico City Metro rolling stock
ⓘ
linked to:
Mexico City Metro rubber-tyred system
electric multiple units ⓘ rubber-tyred metro trains ⓘ |
| brakeType | electro-pneumatic brakes ⓘ |
| carBodyMaterial | steel ⓘ |
| countryOfOperation | Mexico ⓘ |
| designedFor |
high-frequency metro service
ⓘ
underground operation ⓘ |
| designedForPlatformHeight | high platforms ⓘ |
| designedForTraffic | high passenger volume ⓘ |
| doorType | sliding doors ⓘ |
| electrificationSystem | 750 V DC third rail (line-dependent) ⓘ |
| enteredService | late 1960s ⓘ |
| hasCoupling | multiple-unit control ⓘ |
| hasFeature |
rubber tyres running on concrete rollways
ⓘ
steel guide rails for lateral guidance ⓘ |
| introduced | 1968 ⓘ |
| locationOfOperation |
Valley of Mexico metropolitan area
ⓘ
linked to:
Greater Mexico City metropolitan area
|
| network | Sistema de Transporte Colectivo Metro ⓘ |
| operatedBy | Sistema de Transporte Colectivo ⓘ |
| operatedOnLine |
Mexico City Metro Line 1
ⓘ
Mexico City Metro Line 2 ⓘ Mexico City Metro Line 3 ⓘ Mexico City Metro Line 5 ⓘ Mexico City Metro Line 9 ⓘ |
| operatingEnvironment | urban rail ⓘ |
| operationalRole | mainline metro service ⓘ |
| operationalSince | 1969 ⓘ |
| powerCollectionMethod | third rail ⓘ |
| primaryUse | passenger transport ⓘ |
| propulsion | electric traction ⓘ |
| railwaySystem |
Mexico City Metro rubber-tyred network
ⓘ
linked to:
Mexico City Metro rubber-tyred system
|
| region | North America ⓘ |
| rollingStockFamily |
Mexico City Metro rubber-tyred stock
ⓘ
linked to:
Mexico City Metro rubber-tyred system
|
| safetySystem | automatic train protection (line-dependent) ⓘ |
| serviceStatus | in service (partially, with some units withdrawn) ⓘ |
| serviceType | rapid transit ⓘ |
| system | Mexico City Metro ⓘ |
| trackGauge | standard gauge ⓘ |
| tractionType | electric multiple unit ⓘ |
| trainType | multiple-unit train ⓘ |
| tyreType | rubber-tyred ⓘ |
| usedFor | mass transit ⓘ |
| usedInCity | Mexico City ⓘ |
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: MP-68 trains Description of subject: MP-68 trains are a class of rubber-tyred metro rolling stock that have operated on Mexico City’s Metro system since the late 1960s.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.