(S (S (S (BASENP (DT The) (NN submarine)) (VP (VP (VBD was) (RB not)) (PP (IN in) (BASENP (NN danger))))) (CC and) (S (BASENP (PRPD its) (JJ nuclear) (NN reactor)) (VP (VBD was) (VP (VBN unaffected))))) (PERIOD .))