Assertion: collapse | /r/HasProperty | unannounced
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Collapse is a sudden and often unannounced loss of postural tone (going weak), often but not necessarily accompanied by loss of consciousness.
text: Collapse is a sudden and often unannounced loss of postural tone (going weak), often but not necessarily accompanied by loss of consciousness.