(S (S (BASENP (NNS Police)) (VP (VP (VBP have) (VP (VP (VBN appealed) (PP (IN for) (BASENP (NNS victims)))) (S (VP (TO to) (VP (VB come) (ADVP (RB forward))))))) (CONJP (COMMA ,) (CC but)) (VP (VBD acknowledged) (SBAR (S (BASENP (PRP it)) (VP (MD may) (VP (VB be) (ADJP (JJ difficult) (PP (IN for) (BASENP (DT some))))))))))) (PERIOD .))