(S (S (NP (BASENP (NN Art) (NNS thieves)) (PP (IN in) (BASENP (NNP Greece)))) (VP (VP (VP (VBD broke) (PP (IN into) (BASENP (DT the) (NNP Athens) (NNP National) (NNP Gallery)))) (PP (IN on) (BASENP (NNP Monday)))) (CC and) (VP (VBD stole) (NP (BASENP (NN three) (JJ valuable) (NNS works)) (PP (IN of) (BASENP (NN art))))))) (PERIOD .))