Assertion: acne | /r/HasProperty | difficult
Facets:
Source sentences:
text: However, just because acne is difficult to treat doesn't make it impossible to treat.
text: Acne is a difficult to treat and often debilitating disease that affects the skin, usually the face.
text: Acne is so difficult to treat because it's incredibly hard to figure out the exact cause of the acne lesions for each individual person.