Assertion: silk's appearance | /r/HasProperty | due
Facets:
Source sentences:
text: The shimmering appearance of silk is due to the triangular prism-like structure of the silk fibre, which allows silk cloth to refract incoming light at different angles, thus producing different colors.
text: This appearance was due to silk's prism-like shape/structure, which refracted light from every angle.
text: The shimmering appearance of silk is due to the triangular prisma-like structure of silk fiber, which allows silk scarf to break incoming light at different angles, creating different colors.