Assertion: bristle | /r/HasProperty | natural
Facets:
Source sentences:
text: Bristles may be natural or synthetic.
text: The bristles on a quality brush may be either natural animal hair (hog or ox) or synthetic (polyester, nylon) or a blend of the two.
text: Bristles may be natural—either soft hair or hog bristle—or synthetic.
text: : The bristles on a quality brush may be either natural animal hair (hog or ox) or synthetic (polyester, nylon) or a blend of the two.