an engrossing and grim portrait of hookers : what they think of themselves and their clients 
(ROOT (NP (NP (DT an) (ADJP (JJ engrossing) (CC and) (JJ grim)) (NN portrait)) (PP (IN of) (NP (NP (NNS hookers)) (: :) (SBAR (WHNP (WP what)) (S (NP (PRP they)) (VP (VBP think) (PP (IN of) (NP (NP (PRP themselves)) (CC and) (NP (PRP$ their) (NNS clients)))))))))))
(ROOT (NP (NP (DT ) (ADJP (JJ ) (CC ) (JJ )) (NN )) (PP (IN ) (NP (NP (NNS )) (: ) (SBAR (WHNP (WP )) (S (NP (PRP )) (VP (VBP ) (PP (IN ) (NP (NP (PRP )) (CC ) (NP (PRP$ ) (NNS )))))))))))