rtokens: There were unconfirmed reports that Iran had sent troops into northern Iraq in response to Iraq 's attack .
pos: NNP VBD JJ JJ NNS VBD DT NN IN NNP , WDT VBZ VBN VBN IN CD IN JJ NNS WP NNP VBZ VBP VBN IN NNP .
tokens: Clinton said Iraqi military forces overran the city of Arbil , which has been held since 1994 by Kurdish rebels who Baghdad says are backed by Iran .
ltokens: The U.S. defense officials said military flights to enforce no-fly zones in both northern and southern Iraq doubled over the weekend .