
Are the following mentions coreferent?:
<m> killed </m> in Three Palestinians, who had sought refuge in a small co-educational UN school in Gaza City, died when a missile hit the building's toilet facilities. 
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<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. 