Assertion: lamp's base | /r/MadeOf | glass
Facets:
Source sentences:
text: Lamps usually have a base made of ceramic, metal, glass, or plastic, which secures the lamp in the socket of a light fixture.
text: When the base is made of glass, the light from the lamp tends to seem brighter as well.
text: Bases made of ceramic, glass, or metal are prefabricated.