
Are the following mentions coreferent?:
<m> first - degree murder </m> in A jury in eastern Oklahoma has convicted a Spiro man of two counts of first-degree murder in the 2012 shooting death of his pregnant girlfriend. 
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<m> second-degree murder </m> in Peterson was convicted of first-degree murder for the death of Laci Peterson and second-degree murder for the death of their unborn son just before Christmas 2002. The same jury that recommended Peterson's penalty found him guilty of the first-degree murder of his wife and the second-degree murder of his unborn child. 