(S (S (ADVP (RB However)) (COMMA ,) (S (NP (NP (BASENP (DT the) (NN collapse)) (PP (IN of) (NP (DT the) (NP (UCP (BASENP (NNP Ottoman)) (CC and) (ADJP (NNP Russian))) (NNPS Empires))))) (PP (IN in) (NP (BASENP (DT the) (NN wake)) (PP (IN of) (BASENP (DT the) (NNP First) (NNP World) (NNP War)))))) (VP (VBD led) (PP (TO to) (BASENP (DT the) (NNP Armenian) (CC --) (NNP Azerbaijani) (NNP War)))))) (PERIOD .))