Assertion: road | /r/HasProperty | passable
Facets:
value: due to steepness
type: CAUSE
value: sometimes
type: DEGREE
value: to four-wheel drive vehicles
type: OTHER
Source sentences:
text: Due to steepness, mud, snow, or fords, roads can sometimes be passable only to four-wheel drive vehicles, those with snow chains or snow tires, or those capable of deep wading or amphibious operation.