Assertion: canker sore | /r/CapableOf | start in the frog
Facets:
value: normally
type: DEGREE
Source sentences:
text: Canker in horses starts in the frog, or the underside of the hoof that touches the ground if the horse is standing on soft footing.
text: It normally starts in the frog, but can quickly take over the sole, bars, and hoof wall.