
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> strike </m> in A refugee camp in South Sudan's Unity state was bombed on Thursday, South Sudan officials and witnesses said, threatening to raise tensions with Sudan. Sudan's armed forces denied they carried out the strike. The governor of Unity state, Taban Deng, accused Khartoum of carrying out the attack. 