(S (S (ADVP (RB However)) (COMMA ,) (S (NP (BASENP (ADJP (RBR more) (JJ advanced)) (NNS features)) (COMMA ,) (PP (IN like) (NP (BASENP (NN voice) (NNS calls)) (CC and) (BASENP (JJ shared) (NNS folders))))) (VP (VP (VBP are) (RB not)) (ADJP (JJ interoperable) (PP (IN between) (BASENP (DT the) (NN two) (NNS services))))))) (PERIOD .))