(S (S (BASENP (PRP It)) (VP (VBZ is) (VP (VBN credited) (PP (IN as) (NP (BASENP (NN one)) (PP (IN of) (NP (BASENP (JJ many) (JJ dissident) (NNS movements)) (SBAR (WHNP (WDT which)) (S (VP (PP (IN in) (BASENP (DT the) (NNS 1980s))) (VP (VBD pressured) (NP (BASENP (NNS reforms)) (SBAR (WHNP (WDT which)) (S (VP (ADVP (RB eventually)) (VP (VBD led) (PP (TO to) (NP (BASENP (DT the) (NN dissolution)) (PP (IN of) (NP (BASENP (DT the) (NNP Soviet) (NNP Union)) (CC and) (NP (BASENP (NNS states)) (PP (IN in) (NP (BASENP (PRPD its) (NN sphere)) (PP (IN of) (BASENP (NN influence)))))))))))))))))))))))))) (PERIOD .))