(S (S (BASENP (DT The) (NN fish)) (VP (VBD bit) (NP (BASENP (NN six) (NNS bathers)) (COMMA ,) (SBAR (WHPP (BASENP (NN two)) (WHPP (IN of) (WHNP (WP whom)))) (S (VP (VP (VBD required) (BASENP (JJ emergency) (JJ medical) (NN treatment))) (PP (IN for) (NP (BASENP (NN bite) (NNS wounds)) (ADVP (NP (NP (QP (ADVP (RB up) (TO to)) (NN 10)) (NNS centimeters)) (PRN (LRB -LRB-) (BASENP (NN 3.9) (NN in)) (RRB -RRB-))) (RBR long)))))))))) (PERIOD .))