Assertion: granite's rock | /r/HasProperty | hard
Facets:
value: very
type: DEGREE
Source sentences:
text: Granite is a hard and tough rock with an average density between 2.65and 2.75 g/cm.
text: It is a very hard igneous rock containing quartz, mica and feldspar as its main mineral makeup.
text: This rock is extremely durable and hard, making it the perfect substance for construction uses in such items as countertops or flooring.