Assertion: melanoma | /r/CapableOf | arise in the skin
Facets:
value: usually
type: TEMPORAL
value: from the pigment-producing cells
type: OTHER
Source sentences:
text: Although most melanomas arise in the skin, they may also arise from mucosal surfaces or at other sites to which neural crest cells migrate, including the uveal tract.
text: Melanoma is a serious form of cancer, usually arising from the pigment-producing cells within the skin.