
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> according to </m> in According to news agency reports, two Israeli tank shells struck the school in Jabaliya refugee camp, spraying shrapnel on people inside and outside the building. 