(S (S (BASENP (PRP They)) (VP (ADVP (RB further)) (VP (VBP allege) (SBAR (IN that) (S (BASENP (DT the) (NN company)) (VP (VP (VBD was) (ADJP (JJ aware) (SBAR (IN that) (S (BASENP (DT the) (NN pipeline)) (VP (MD could) (VP (VB fail))))))) (CONJP (COMMA ,) (CC but)) (VP (VP (VBD did) (RB not)) (VP (VB act))))))))) (PERIOD .))