Assertion: chevron's refinery | /r/HasProperty | transformed
Facets:
value: during the 1970s
type: TEMPORAL
value: during 1980s
type: TEMPORAL
Source sentences:
text: During the 1970s and 1980s as the dynamics of the United States petroleum industry were changing, the refinery was transformed to produce higher-value, higher-volume fuels and lubricating oils and to comply with increasingly stringent state and federal policies.