Assertion: kerosene | /r/HasProperty | important commodity
Facets:
value: in the days before electric lighting
type: TEMPORAL
Source sentences:
text: Kerosene was an important commodity in the days before electric lighting and it was the first material to be chemically extracted on a large commercial scale.
text: Kerosene was an important commodity in the days before electric lighting and it was the first material to be chemically extracted on a large commercial scale.
text: Kerosene was an important commodity in the days before electric lighting and it was the first material to be chemically extracted on a large commercial scale.