Transport for London Travelcards are not valid on services from the station.

Entity and relation annotations:
id: 0
type: entity
value: text: London
labels: <Location>
id: 1
type: entity
value: text: Travelcards
labels: <Production>
id: 2
type: entity
value: text: Transport for London
labels: <Organization>
type: relation
to_id: 0
labels: Organization:located_in:Location
from_id: 2
type: relation
to_id: 0
labels: Production:Originated_in:Location
from_id: 1
type: relation
to_id: 1
labels: Organization:develops/produces/sells:Production
from_id: 2