rtokens: One of the dead was a civilian passer-by .
pos: NNS VBD DT NNS VBD JJ NNS IN DT JJ .
tokens: Police said the guards fired automatic weapons at each other .
ltokens: Four others were wounded in the clash , caused by a blood feud between two families , the Kesers and Karabuluts , serving as state-paid village guards against Kurdish rebels .