Assertion: carbon black | /r/AtLocation | the rubber
Facets:
Source sentences:
text: Carbon black is added to the rubber used for manufacturing tires as a filler and a strengthening and reinforcing agent and is used in parts of tires such as inner liners, treads, carcasses, and sidewalls.
text: In addition to its uses in making inks and paints, carbon black is added to the rubber used in tires to improve its wearing qualities.