Assertion: electric toothbrush's brush head | /r/HasProperty | purchased
Facets:
value: separately
type: MANNER
Source sentences:
text: Of course, all these brush heads can be purchased separately.
text: The Hybrid brush head can be purchased separately if you so choose.
text: Again, smaller sized compact brush heads had to be purchased separately.
text: Because some people find these brush heads too large, smaller brush heads known as compacts can be purchased separately.