Oyster pay as you go
E270456
Oyster pay as you go is a contactless, stored-value fare payment system used across London’s public transport network, including the Underground, buses, and some rail services.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Oyster pay as you go canonical | 15 |
| Oyster pay-as-you-go | 2 |
| Navigo Liberté+ (pay-as-you-go) | 1 |
| Oyster and contactless (in London area) | 1 |
| Oyster pay as you go (via interchange) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2476192 — 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: Oyster pay as you go Context triple: [Euston Underground station, ticketingSystem, Oyster pay as you go]
-
A.
ORCA card
The ORCA card is a reusable, contactless smart card used to pay fares across multiple public transit systems in the Puget Sound region of Washington State.
-
B.
Opal card
The Opal card is a reusable, contactless smartcard used to pay for public transport across much of New South Wales, Australia.
-
C.
Breeze Card
The Breeze Card is a reusable smart fare card used for paying transit fares across the Metropolitan Atlanta Rapid Transit Authority (MARTA) system in Atlanta, Georgia.
-
D.
Presto card
The Presto card is a reloadable smart card used for paying public transit fares across the Greater Toronto and Hamilton Area and other regions in Ontario, Canada.
-
E.
TAP card
The TAP card is a reusable contactless smart card used to pay fares across public transit systems in the Los Angeles County region.
- 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: Oyster pay as you go Target entity description: Oyster pay as you go is a contactless, stored-value fare payment system used across London’s public transport network, including the Underground, buses, and some rail services.
-
A.
ORCA card
The ORCA card is a reusable, contactless smart card used to pay fares across multiple public transit systems in the Puget Sound region of Washington State.
-
B.
Opal card
The Opal card is a reusable, contactless smartcard used to pay for public transport across much of New South Wales, Australia.
-
C.
Breeze Card
The Breeze Card is a reusable smart fare card used for paying transit fares across the Metropolitan Atlanta Rapid Transit Authority (MARTA) system in Atlanta, Georgia.
-
D.
Presto card
The Presto card is a reloadable smart card used for paying public transit fares across the Greater Toronto and Hamilton Area and other regions in Ontario, Canada.
-
E.
TAP card
The TAP card is a reusable contactless smart card used to pay fares across public transit systems in the Los Angeles County region.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
fare payment system
ⓘ
stored-value card system ⓘ |
| alternativeTo |
cash fares on buses
ⓘ
paper tickets ⓘ |
| appliesTo |
Docklands Light Railway
ⓘ
Elizabeth line ⓘ London Buses ⓘ London Overground ⓘ London Underground ⓘ Thames Clippers river bus services ⓘ
surface form:
Thames Clippers River Bus services
Tramlink ⓘ some National Rail services in London ⓘ |
| benefit |
automatic application of caps
ⓘ
cheaper fares than cash on most services ⓘ no need to buy a ticket before travel ⓘ |
| cardType |
Oyster card
ⓘ
Oyster photocard ⓘ Oyster card ⓘ
surface form:
Visitor Oyster card
|
| currency | Pound sterling ⓘ |
| dataCarrier | contactless smartcard chip ⓘ |
| fareStructure |
distance-based fares
ⓘ
zonal fares ⓘ |
| feature |
automatic fare calculation
ⓘ
daily capping ⓘ integration across multiple transport modes ⓘ off-peak and peak pricing ⓘ touch in and touch out validation ⓘ weekly capping on some services ⓘ |
| governingBody | Mayor of London via Transport for London ⓘ |
| introducedBy | Transport for London ⓘ |
| introducedIn |
London, England
ⓘ
surface form:
London
|
| operator | Transport for London ⓘ |
| partOf | Oyster card system ⓘ |
| paymentMethod | pay-as-you-go ⓘ |
| regionServed |
Greater London
ⓘ
London fare zones 1–9 and some extensions ⓘ |
| relatedSystem | contactless EMV bank card payment on TfL ⓘ |
| requires | sufficient balance to start a journey ⓘ |
| technologyType | contactless smartcard ⓘ |
| topUpMethod |
Oyster Ticket Stops
ⓘ
online top-up ⓘ station ticket offices ⓘ ticket machines ⓘ |
| usedFor |
multi-leg journeys
ⓘ
public transport fares ⓘ single journeys ⓘ |
| validationDevice | yellow card readers at gates and validators ⓘ |
| valueType | stored monetary credit ⓘ |
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: Oyster pay as you go Description of subject: Oyster pay as you go is a contactless, stored-value fare payment system used across London’s public transport network, including the Underground, buses, and some rail services.
Referenced by (20)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Oyster and contactless (in London area)
this entity surface form:
Oyster pay-as-you-go
this entity surface form:
Navigo Liberté+ (pay-as-you-go)
this entity surface form:
Oyster pay as you go (via interchange)
this entity surface form:
Oyster pay-as-you-go