(S (S (S (BASENP (DT The) (NN pilot) (NNS whales)) (VP (VP (VBD beached) (BASENP (PRP themselves))) (PP (IN at) (NP (BASENP (NNP Port) (NNP Levy)) (PP (IN on) (BASENP (NNP South) (NNP Island))))))) (CONJP (COMMA ,) (CC but)) (S (NP (BASENP (NNS dozens)) (PP (IN of) (BASENP (NNS volunteers)))) (VP (VBD helped) (S (VP (TO to) (VP (VP (VP (VP (VB try) (CC and) (VB get)) (BASENP (PRP them))) (ADVP (RB back) (ADVP (RB out) (PP (TO to) (BASENP (DT the) (JJ open) (NN water)))))) (PP (IN out) (PP (IN of) (NP (BASENP (DT the) (NN inlet)) (COMMA ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (ADJP (JJ muddy) (CC and) (JJ shallow)))))))))))))) (PERIOD .))