{TAIL ~ A helicopter} above the tree is connected to {HEAD ~ a point} near the top of the trunk 
{ TAIL ~ A helicopter } above the tree is connected to { HEAD ~ a point } near the top of the trunk
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH