
Are the following mentions coreferent?:
<m> bombed </m> in A refugee camp in South Sudan's Unity state was bombed, South Sudan officials and witnesses said, threatening to raise tensions with Sudan in the violence- plagued border region. A Reuters correspondent heard a large explosion in the Yida refugee camp, then saw a crater about two meters ( 6. 6 feet ) wide, an unexploded bomb wedged in the side of a school building and a white aircraft flying north. 
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<m> fired on </m> in Israel moved quickly to explain the attack on the Jabalya school, saying its forces had been fired on first. John Ging, the top UN refugee official in Gaza, said UN staff and Palestinian families in the school compound had been screened for weapons, and he disputed Israel's claim that mortars were fired from inside. The casualties included Hamas militants Imad and Hassan Abu Askar, both of whom had fired mortar shells at troops from the school. 