rtokens: It 's the end .
pos: " CD NNS VBP VBN RB , " VBD PRP$ NN NNP NNP . "
tokens: " Two sons have come back , " said his mother Nurbika Mamatuyeva . "
ltokens: Mouldi Mamatuyev , in his late 20 's , dressed in black and carrying a machine gun , was welcomed by his mother and sister .