Assertion: asphalt's tar | /r/HasProperty | available product
Facets:
value: readily
type: MANNER
value: during the early and mid-20th century
type: TEMPORAL
Source sentences:
text: During the early and mid-20th century when town gas was produced, tar was a readily available product and extensively used as the binder for road aggregates.
text: During the early and mid-20th century when town gas was produced, tar was a readily available product and extensively used as the binder for road aggregates.