
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. 
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<m> said </m> in B.C. Attorney General Wally Oppal confirmed that Winston Blackmore and James Oler were arrested and charged with practising polygamy. Oppal said Blackmore is alleged to be married to 20 women, while Oler is accused of committing polygamy by being married to two women. Oppal said there has been a very complex issue, he told The Canadian Press. 