Assertion: synthetic polymer | /r/HasProperty | plastic
Facets:
value: sometimes
type: TEMPORAL
value: commonly
type: DEGREE
Source sentences:
text: Synthetic polymers are ubiquitous in commercial materials and products in everyday use, commonly referred to as plastics, and rubbers, and are major components of composite materials.
text: Synthetic polymers are sometimes referred as “plastics”, of which the well-known ones are nylon and polyethylene.