Assertion: canker sore | /r/HasProperty | gray
Facets:
value: usually
type: DEGREE
value: with a red border
type: OTHER
Source sentences:
text: The canker sores are usually yellow, white or gray with a red border.
text: Canker sores are gray or white sores surrounded by a red inflamed area.
text: Canker sores are white, gray or yellow in color and are marked by red border.