(S (S (BASENP (DT This)) (VP (VBZ is) (NP (NP (BASENP (DT the) (NN home)) (PP (IN of) (BASENP (NNP United) (NNPS States) (NNP President) (NNP George) (NNP W.) (NNP Bush)))) (COMMA ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ has) (VP (VBN been) (VP (VBN nicknamed) (S (BASENP (DT the) (NNP Western) (NNP White) (NNP House))))))))))) (PERIOD .))