(S (S (BASENP (JJ Last) (NN weekend)) (COMMA ,) (S (BASENP (DT a) (NNP U.S.-owned) (NN cruise) (NN ship)) (VP (VBD was) (VP (VBN attacked) (PP (IN with) (BASENP (NN rocket) (JJ propelled) (NNS grenades))))))) (PERIOD .))