(S (S (NP (BASENP (DT The) (NN value)) (PP (IN of) (NP (BASENP (DT the) (NNS works)) (VP (VBN stolen))))) (VP (VP (VBD was) (RB not)) (VP (ADVP (RB yet)) (VP (VBN determined) (PP (IN by) (BASENP (NN gallery) (NNS officials))))))) (PERIOD .))