(S (S (S (BASENP (DT The) (NNP Muslim) (NNP Brotherhood)) (VP (VBP claim) (SBAR (S (BASENP (DT the) (NN attack)) (VP (VBD was) (ADJP (JJ unprovoked))))))) (CC and) (S (NP (BASENP (DT those)) (VP (VBN gathered))) (VP (VBD were) (VP (VBG praying))))) (PERIOD .))