(S (S (NP (BASENP (QP (RB Approximately) (NN 23)) (NN percent)) (PP (IN of) (NP (BASENP (DT the) (NN city) (POS 's)) (BASENP (NN living) (NNS quarters))))) (VP (VBP are) (ADJP (RB now) (JJ empty)))) (PERIOD .))