
Are the following mentions coreferent?:
<m> striking </m> in Sudan has denied striking South Sudanese territory. 
</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. 