
Are the following mentions coreferent?:
<m> Polygamy </m> in Warren Jeffs Trial : Defends 'Spiritual' Marriage, Polygamy 
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<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. 