(S (S (SBAR (IN If) (S (BASENP (JJ questionable) (NNS welds)) (VP (VBP are) (VP (VBN found) (PP (IN in) (BASENP (DT the) (NN support) (NNS piers))))))) (COMMA ,) (S (PP (VBG according) (PP (TO to) (BASENP (NNS reports)))) (COMMA ,) (S (NP (BASENP (JJ much)) (PP (IN of) (BASENP (DT the) (JJ new) (NN construction)))) (VP (MD may) (VP (VB have) (S (VP (TO to) (VP (VB be) (VP (VP (VBN torn) (PRT (RP down))) (S (VP (TO to) (VP (VB be) (VP (VBN rebuilt)))))))))))))) (PERIOD .))