Assertion: seizure | /r/HasProperty | preceded by aura
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Normally lasting from one to two minutes, these seizures are sometimes preceded by an aura, which is a sort of warning sign that's different for everyone and is actually a type of focal aware seizure itself.
text: Seizures are often preceded by an aura, known as a simple partial seizure.