Assertion: electric toothbrush's bristle | /r/HasProperty | set at optimal angle of 16 degrees
Facets:
value: in order to reach critical areas
type: PURPOSE
Source sentences:
text: In order to reach critical areas, the bristles are set at the optimal angle of 16 degrees.
text: The brush head is small to reach critical areas and the bristles are set at the optimal angle of 16 degrees for brushing.