
Are the following mentions coreferent?:
<m> charges </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. The polygamy charge against Blackmore involves 20 individuals, while the charge against Oler involves only two. Last June, Oppal hired Robertson to investigate whether charges should be laid against the openly polygamist members of the Bountiful commune, where older men routinely are married, legally and common-law, to much younger women. 
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<m> charged </m> in Two leaders of polygamous groups with ties to Utah have been arrested in Canada, charged with practicing polygamy. The criminal charges were filed in Creston, British Columbia. 