(S (S (BASENP (NNP Camp) (NNP Phoenix)) (VP (VBZ is) (VP (ADVP (RB often)) (VP (VBN attacked) (PP (IN by) (NP (BASENP (NNS insurgents)) (COMMA ,) (NP (ADVP (RB particularly)) (BASENP (NN suicide) (NNS bombers))))))))) (PERIOD .))