Assertion: understudy | /r/CapableOf | sign in before performance
Facets:
value: at the stage door
type: LOCATION
value: often
type: TEMPORAL
Source sentences:
text: The standby often signs in before a performance at the stage door, sticks around to make sure the star enters stage left, then hangs out in the green room or stays in a 10-block vicinity of the theatre, a cell-phone call away.