
Are the following mentions coreferent?:
<m> air strike </m> in A refugee camp was the target of an air strike in South Sudan's Unity state on Thursday, less than 50 km ( 30 miles ) from the tense border with Sudan, a Reuters witness said. There appeared to be no casualties. The Reuters correspondent heard a large explosion then saw a crater about two metres ( 6. 6 feet ) wide, an unexploded bomb wedged in the side of a school building and a white aircraft flying north from the Yida refugee camp. 
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<m> killed </m> in Twenty-eight hours after the attack on one of his schools killed 40 Palestinians seeking shelter from Israel's war on Hamas, the United Nations 'director of operations in Gaza, John Ging, was certain of at least one thing. The attack that has also left more 50 people with serious injuries, 10 of whom remain critical. When the Israeli attack came on the Prep C girls school in the Jabaliya camp at 3.45pm on Tuesday, Mr Ging said about 350 Palestinians were inside, using the school as a shelter. 