rtokens: " The main subject ( of the talks ) was the search for a peaceful solution for Nagorno-Karabakh , " the source said .
pos: DT NN , WDT VBD IN CD , VBD RB CD NNS .
tokens: The conflict , which began in 1988 , claimed over 10,000 lives .
ltokens: An uneasy ceasefire has prevailed in Nagorno-Karabakh , which represents around 20 percent of Azeri territory , since May 1994 after ethnic Armenians drove Azeris out of the region .