(S (S (PP (VBG According) (PP (TO to) (BASENP (JJ public) (NNS sources)))) (COMMA ,) (S (BASENP (DT the) (JJ Chinese) (NN government)) (VP (VBZ has) (VP (VP (VBN begun) (NP (NP (BASENP (DT a) (JJ concerted) (NN campaign)) (PP (IN of) (BASENP (JJ economic) (NNS threats)))) (PP (IN against) (BASENP (DT the) (NNP United) (NNPS States))))) (COMMA ,) (S (VP (VBG hinting) (SBAR (IN that) (S (S (BASENP (PRP it)) (VP (MD may) (VP (VB liquidate) (NP (BASENP (PRPD its) (JJ vast) (NN holding)) (PP (IN of) (BASENP (NNP US) (NNS treasuries))))))) (SBAR (IN if) (S (BASENP (NNP Washington)) (VP (VBZ imposes) (NP (BASENP (NN trade) (NNS sanctions)) (SBAR (WHNP (WDT that)) (S (VP (VBP seek) (S (VP (TO to) (VP (VB force) (BASENP (DT a) (NNP Yuan) (NN revaluation)))))))))))))))))))) (PERIOD .))