{HEAD ~ a tension leg platform station} which includes {TAIL ~ a platform} that floats at the sea surface and a plurality of tension lines that extend vertically from said platform to the seafloor 
includes
{ HEAD ~ a tension leg platform station } which includes { TAIL ~ a platform } that floats at the sea surface and a plurality of tension lines that extend vertically from said platform to the seafloor
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH