(S (S (BASENP (DT This)) (VP (VBZ is) (NP (BASENP (DT the) (JJ first) (NN time)) (SBAR (S (BASENP (NNP Montenegro)) (VP (VBZ has) (VP (VP (VBN been) (ADJP (JJ independent))) (PP (IN since) (NP (BASENP (NN 1916)) (COMMA ,) (SBAR (WHADVP (WRB when)) (S (BASENP (PRP it)) (VP (VBD became) (NP (BASENP (DT a) (NN part)) (PP (IN of) (BASENP (NNP Austro-Hungary)))))))))))))))) (PERIOD .))