
Are the following mentions coreferent?:
<m> announced </m> in Canadian authorities announced that two leaders of polygamous factions in Bountiful, British Columbia, have been arrested. 
</s>
<m> said </m> in Tim Shields and Attorney-General Wally Oppal announced Wednesday that the RCMP arrested two Bountiful residents, Winston K. Blackmore, 52, and James Oler, 44, on charges of polygamy. Shields said both Oler and Blackmore were arrested Wednesday morning without incident by eight plainclothes RCMP officers in unmarked vehicles. 