Assertion: marble | /r/HasProperty | a type of metamorphic rock
Facets:
value: under certain conditions
type: TEMPORAL
Source sentences:
text: Marble is a type of metamorphic rock, while limestone is a sedimentary rock.
text: Marble is type of metamorphic rock that forms from limestone, dolomite, or older marble under certain conditions.
text: Marble is a type of metamorphic rock formed from limestone.
text: Marble is a type of metamorphic rock.