
Are the following mentions coreferent?:
<m> bombed </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. 
</s>
<m> attack </m> in Three shells hit Fakhura, a girls elementary school in the Jabalya refugee camp in northern Gaza, at about 3pm on Tuesday ( 12am yesterday ), according to UN Relief and Works Agency spokesman Christopher Gunness. 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. 