
Are the following mentions coreferent?:
<m> killed </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 casualties appeared to intensify international efforts to arrange a cease-fire after 11 days of a punishing Israeli offensive against Hamas. 
</s>
<m> claims </m> in The United Nations has disputed claims that Hamas militants fired mortars from the Gaza school that has suffered the deadliest attack of the war with Israel. 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 the school. 