(S (S (BASENP (PRP It)) (VP (VBD was) (VP (VP (VBN revealed) (BASENP (NN today))) (SBAR (IN that) (S (BASENP (NNP Walesa)) (VP (VP (VBZ has) (RB not)) (VP (ADVP (RB formally)) (VP (VP (VBN been) (NP (BASENP (DT a) (NN member)) (PP (IN of) (BASENP (NNP Solidarity))))) (PP (IN since) (NP (BASENP (DT the) (NN beginning)) (PP (IN of) (BASENP (DT this) (NN year))))))))))))) (PERIOD .))