Its Baghdad headquarters has been closed since a truck bombing in August 2003 killed 22 staff members , including the chief United Nations representative in Iraq , Sergio Vieira de Mello .
Iraq /location/location/contains Baghdad
Iraq /location/country/capital Baghdad
PRP$ NNP NN VBZ VBN VBN IN DT NN NN IN NNP CD VBD CD NN NNS , VBG DT NN NNP NNP NN IN NNP , NNP NNP IN NNP .
Iraq
LOCATION
Baghdad
LOCATION
/location/location/contains
Iraq
LOCATION
Baghdad
LOCATION
/location/country/capital