Assertion: screwdriver's head | /r/HasProperty | identifiable
Facets:
value: usually
type: DEGREE
value: by a single dot
type: OTHER
value: by an "x"
type: OTHER
Source sentences:
text: Heads are usually identifiable by a single dot or an "X" to one side of the cross slot.
text: Heads are usually identifiable by a single raised dot to one side of the cross slot.