Assertion: paper | /r/HasProperty | porous
Facets:
value: very
type: DEGREE
Source sentences:
text: Since paper and cardboard are porous, they carry the lowest potency for the shortest period of time.
text: Paper is a highly porous material and contains as much as 70% air.
text: A paper for air filters needs to be very porous and have a weight of 100 - 200 g/m2.