Assertion: engine's oil | /r/HasProperty | derived
Facets:
value: from group iv
type: OTHER
value: from some group v bases
type: OTHER
value: from either group iii
type: OTHER
Source sentences:
text: Synthetic oils are derived from either Group III, Group IV, or some Group V bases.
text: To combat this problem, synthetic oils have been developed to eliminate contaminants and excessive build-up.