Assertion: concrete's material | /r/HasProperty | stone
Facets:
Source sentences:
text: Building materials included bones such as mammoth ribs, hide, stone, metal, bark, bamboo, clay, lime plaster, and more.
text: Materials used can include brick, stone (e.g. marble, granite, travertine, limestone), manufactured stone, concrete, glass, stucco and tile.
text: Other materials include wood, iron (a different type of steel), plastic and stone.