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