Assertion: retrograde amnesia | /r/CapableOf | occur following blow
Facets:
value: sometimes
type: TEMPORAL
value: to the head
type: OTHER
Source sentences:
text: Sometimes, retrograde amnesia occurs following a blow to the head that results in the loss of events that occurred just prior to the injury, but the memory loss can be much more extensive and debilitating if there has been severe brain damage.