Assertion: zebra's hair | /r/HasProperty | black
Facets:
Source sentences:
text: Hairs that contain melanin appear black, whereas those without melanin appear white.
text: Zebras are dark skinned animals, and their stripes arise from specialized skin cells called melanocytes, which transfer melanin into some of their hairs; the hairs that have melanin appear black, and those that do not appear white.