Assertion: sprinkler | /r/CapableOf | retract below ground
Facets:
Source sentences:
text: A piston that contains the nozzle lifts up from the sprinkler body when the sprinkler is operating and then retracts back below ground when not in use.
text: A portion of the sprinkler, appropriately called the “riser”, rises up out of the ground when the sprinkler is operating and then retracts back below ground when not in use.