Assertion: porosity | /r/HasProperty | the percentage of void space
Facets:
value: in a rock
type: LOCATION
Source sentences:
text: Porosity is the percentage of void space in a rock.
text: Porosity is the percentage of void space in a rock.
text: Porosity is the percentage of void space in a rock.
text: Porosity is the percentage of void space in a rock.