Assertion: concussion | /r/CapableOf | occur with blow
Facets:
value: to the head
type: OTHER
value: through helmet
type: MANNER
Source sentences:
text: Concussions can occur with a blow to the head through helmet to helmet contact, and if undiagnosed and left untreated can lead to permanent brain damage.
text: Concussion is the sudden but short-lived loss of mental function that occurs after a blow or other injury to the head.