
Are the following mentions coreferent?:
<m> air attack </m> in The UN refugee agency on Friday strongly condemned the aerial bombing of a temporary refugee camp in South Sudan sheltering more than 20, 000 civilians fleeing from conflict in neighbouring Sudan's Nuba Mountains. Two of the bombs fell within the Yida camp, including one close to the school, said by UNHCR spokesman Adrian Edwards. There were no casualties in the camp and we are verifying the situation of surrounding communities. 
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<m> mortar attack </m> in An Israeli mortar strike that killed about 40 Palestinians sheltering in a UN school Tuesday brought new urgency to diplomatic efforts to end Israel's military onslaught in the Gaza Strip. The Israeli army said the UN school in the Jabaliya refugee camp was hit when troops responded to a mortar attack from the grounds and that the dead included a number of Hamas militants. The mortar strike in Jabaliya was the second attack on a school run by the UN Relief and Works Agency, or UNRWA. 