(S (S (BASENP (PRP They)) (VP (ADVP (RB also)) (VP (VBP say) (SBAR (S (NP (BASENP (NN work)) (PP (IN towards) (NP (BASENP (DT a) (NN comparison)) (PP (IN with) (BASENP (JJ non-depressed) (NNS individuals)))))) (VP (VBZ is) (VP (VBN needed)))))))) (PERIOD .))