
Are the following mentions coreferent?:
<m> said </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. Khartoum denies that they carried out the strike. 
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<m> Say </m> in Officials said that military aircraft from Sudan crossed the new international border with South Sudan and dropped bombs Thursday in and around a camp filled with refugees. One day after bombings were reported in another region of South Sudan, an attack that provoked strong condemnation from the U. S. State Department. 