
Are the following mentions coreferent?:
<m> death </m> in The jury concluded that the circumstances surrounding Laci Peterson's disappearance and death could not reasonably be explained in any other way but that Scott Peterson wanted her dead so he could continue and perhaps expand his secret life with Amber Frey. 
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<m> death sentence </m> in Upon learning of his death sentence, Scott Peterson sat defiantly still and tight-jawed, the same vacant expression he wore throughout a murder trial in which he never spoke. 