Assertion: skateboarder's trick | /r/HasProperty | performed
Facets:
value: usually
type: DEGREE
value: by popping the board
type: MANNER
value: frontside
type: MANNER
Source sentences:
text: and all flip tricks can be performed frontside or backside.
text: Basic flip tricks are performed by popping the board with one foot, and using the other foot to flip the raised end.
text: Flip tricks are usually performed while the skateboarder is rolling, although they may be performed while stationary.
text: the area where the trick is being performed] again.