that borders on rough-trade homo-eroticism 
(ROOT (SBAR (WHNP (IN that)) (S (VP (NNS borders) (PP (IN on) (NP (NML (JJ rough) (HYPH -) (NN trade)) (NN homo) (HYPH -) (NN eroticism)))))))
(ROOT (SBAR (WHNP (IN )) (S (VP (NNS ) (PP (IN ) (NP (NML (JJ ) (HYPH ) (NN )) (NN ) (HYPH ) (NN )))))))