
Are the following mentions coreferent?:
<m> said </m> in Mr. Ging said by phone from the United Nations' Relief and Works Agency in Gaza that about 350 Palestinians were inside the school, using the school as a shelter. He further said that they had established beyond any doubt that the school was not being used by any militants. 
</s>
<m> saying </m> in 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. 