Assertion: birch's bark | /r/HasProperty | thick
Facets:
value: in the cork oak
type: LOCATION
Source sentences:
text: The bark of most pines is thick and scaly, but some species have thin, flaky bark.
text: In the cork oak (Quercus suber) the bark is thick enough to be harvested as a cork product without killing the tree; in this species the bark may get very thick (e.g. more than 20 cm has been reported).