(S (S (PP (IN On) (BASENP (NNP August) (NN 7))) (COMMA ,) (S (BASENP (JJ Georgian) (NNS troops)) (VP (VBD launched) (NP (BASENP (DT an) (NN offensive)) (PP (IN against) (NP (BASENP (NNP Tskhinvali)) (COMMA ,) (NP (BASENP (DT the) (NN capital)) (PP (IN of) (BASENP (NNP South) (NNP Ossetia) (NN region)))))))))) (PERIOD .))