Assertion: railroad's track | /r/HasProperty | sited on flat areas
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: Station tracks, sidings, and passing tracks are usually sited on flat areas with grades not in excess of 0.25 percent.
text: Station tracks, sidings, and passing tracks are usually sited on flat areas with grades not in excess of 0.25 percent.