Assertion: rug's material | /r/HasProperty | natural
Facets:
Source sentences:
text: Work is entirely manual and all used materials are natural; the primary material is wool, coloured using plant or mineral dyes.
text: To minimize exposure to toxic chemicals, she recommends buying rugs made with 100-percent natural materials that aren’t treated with synthetic dyes, fire retardants, or moth-proofing chemicals.