The helicopter is moved away from the tree, thereby breaking the connecting portion and allowing {HEAD ~ the upper portion} of {TAIL ~ the tree} to be carried away by the helicopter 
The helicopter is moved away from the tree , thereby breaking the connecting portion and allowing { HEAD ~ the upper portion } of { TAIL ~ the tree } to be carried away by the helicopter
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH