Assertion: railway | /r/CapableOf | provide various types of fixed signals
Facets:
value: to do the job
type: PURPOSE
Source sentences:
text: As train speeds increased, it became increasingly difficult for enginemen to see hand signals given by the policemen, so the railways provided various types of fixed signals to do the job, operated by the policemen, or signalmen as they soon became known (it is due to this that British railway slang still names signalmen as "Bobbies").