Assertion: railroad's track | /r/CapableOf | take one of two forms
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: Power is supplied to moving trains with a (nearly) continuous conductor running along the track that usually takes one of two forms: an overhead line, suspended from poles or towers along the track or from structure or tunnel ceilings, or a third rail mounted at track level and contacted by a sliding "pickup shoe".