
Are the following mentions coreferent?:
<m> polygamy </m> in Two top leaders of the controversial polygamous sect in Bountiful, B.C., have been arrested and charged with practising polygamy. Oppal said in 2005, when he was appointed attorney general, that he was concerned about the polygamy issue in Bountiful because of the exploitation of women and children. 
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<m> POLYGAMY </m> in RCMP MAKE ARRESTS IN BC POLYGAMOUS COMMUNITY POLICE HAVE MOVED IN AND ARRESTED AT LEAST TWO MEN FROM The RELIGIOUS COMMUNITY OF BOUNTIFUL IN The BC INTERIOR.BC ATTORNEY GENERAL WALLY OPAL ISSUED A STATEMENT TODAY SAYING THAT TWO MEN, WINSTON BLACKMORE AND JAMES OLER, HAD BEEN ARRESTED  ON CHARGES OF POLYGAMY PURSUANT TO The CRIMINAL CODE. 