According to {HEAD ~ another object} of {TAIL ~ the invention}, the middle member comprises a sandwich of wire trusses and polystyrene materials 
of
According to { HEAD ~ another object } of { TAIL ~ the invention } , the middle member comprises a sandwich of wire trusses and polystyrene materials
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH