
Are the following mentions coreferent?:
<m> said </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. 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> saying </m> in 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. 