Assertion: chariot's wheel | /r/CapableOf | have evolved as natural solution
Facets:
value: in areas
type: LOCATION
value: to the problem of transport
type: TRANSITIVE-OBJECT
Source sentences:
text: Whether first developed as an 'invention' in one place, or re-invented in several, wheels seem to have evolved as a natural solution to the problem of transport in areas where both oxen and wood are available.