Assertion: skin cancer | /r/HasAspect | two primary groups
Facets:
value: for staging purposes
type: PURPOSE
Source sentences:
text: Skin cancers are divided into two primary groups for staging purposes: nonmelanoma skin cancer and melanoma.
text: Skin cancers can be divided into two primary groups: melanoma and nonmelanoma skin cancers, which can be further divided into basal cell carcinoma and squamous cell carcinoma.