Assertion: basalt | /r/HasProperty | dense
Facets:
value: very
type: DEGREE
value: often
type: DEGREE
Source sentences:
text: Basalt is an extrusive igneous rock, sometimes porphyritic, and is often both fine-grained and dense.
text: The dark spots we see on the moon that create the image of the man in the moon are actually craters filled with basalt, which is a very dense material.