Assertion: mild steel | /r/HasProperty | popular material
Facets:
value: for a long time
type: TEMPORAL
value: for poles
type: PURPOSE
value: for exhaust parts
type: PURPOSE
value: for pipelines
type: PURPOSE
Source sentences:
text: Mild steel is a popular material for pipelines and poles.
text: For a long time, mild steel was a popular material for exhaust parts.