rtokens: Arbil lies within the so-called safe haven set up at the end of the 1991 Gulf War on the suggestion of British Prime Minister John Major to protect Iraqi Kurds from attack by the Iraqi military .
pos: NNP NNS VBD IN DT JJ NN NN VBD RP IN JJ NNS , JJ NN CC NNS VBD VBN NN IN NN IN DT NN IN JJ NN .
tokens: U.N. officials said that a Kurdish rebel faction backed up by Iraqi tanks , heavy artillery and helicopters had taken control of half of the city after heavy fighting .
ltokens: In no way can Iraqi involvement be seen as helpful , " said a Foreign Office spokesman .