(S (S (S (NP (BASENP (JJ Tar-like) (NNS sands)) (VP (VBN laden) (PP (IN with) (BASENP (NN oil) (CC and) (NN seaweed))))) (VP (VBD were) (VP (VBN piled) (PP (IN on) (BASENP (DT the) (NN shore)))))) (COMMA ,) (SBAR (IN while) (S (NP (BASENP (JJ oil-covered) (NNS birds)) (PP (IN in) (BASENP (JJ slick-covered) (NN water)))) (VP (VBD tried) (S (VP (TO to) (VP (VB flap) (BASENP (PRPD their) (NNS wings))))))))) (PERIOD .))