Assertion: canker sore | /r/Causes | discomfort
Facets:
value: in the mouth
type: LOCATION
Source sentences:
text: Canker sores look like small white or yellow circles surrounded by a red border and may cause discomfort when you eat or drink.
text: Although both canker sores and cold sores cause pain and discomfort in the mouth, their causes are different.
text: Additionally, canker sores aren’t usually dangerous, but they do last at least, several days and can cause some pain and discomfort.