Assertion: canker sore | /r/HasProperty | a type of mouth ulcer
Facets:
Source sentences:
text: A canker sore is a type of mouth ulcer, known medically as an aphthous ulcer.
text: A canker sore – also known as an aphthous ulcer – is a type of mouth sore that forms on the soft tissues in your mouth, such as on or under your tongue and inside your cheeks or lips.i
text: Canker sore is a kind of mouth ulcer and can be caused by a variety of reasons.
text: Canker sores are a type of mouth ulcer also called an aphthous ulcer.