On Sunday night , insurgents struck a crowded market in Sadr City , a Shiite stronghold in Baghdad , killing nearly 60 people .
Baghdad /location/location/contains Sadr City
IN NNP NN , NNS VBD DT JJ NN IN NNP NNP , DT JJ NN IN NNP , VBG RB CD NNS .
Baghdad
LOCATION
Sadr City
LOCATION
/location/location/contains