rtokens: The men have claimed political asylum in Britain saying they were persecuted while in Iraq .
pos: PDT DT NNS VBD VBN IN NNP IN DT NN VBD IN JJ NN , RB IN NNP .
tokens: All the hostages were freed on Tuesday after the plane landed at Stansted airport , north of London .
ltokens: They were accused of taking over Flight 150 which was flying from Khartoum , Sudan , to Amman , Jordan .