(S (S (BASENP (NNP Sharon)) (VP (VBZ has) (VP (VP (VBN been) (PP (IN in) (BASENP (DT a) (NN coma)))) (PP (IN since) (S (VP (VP (VBD suffering) (BASENP (DT a) (JJ major) (NN stroke))) (PP (IN on) (BASENP (NNP January) (NN 4))))))))) (PERIOD .))