
Are the following mentions coreferent?:
<m> first - degree murder </m> in An Oklahoma man has pleaded not guilty to two first-degree murder charges for the deaths of an Arkansas woman and her fetus. 
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<m> second-degree murder </m> in Peterson, a 32-year-old fertilizer salesman from Modesto, showed no emotion, staring stonily at the jury box as the foreman announced a finding of first-degree murder in the death of Laci and second-degree murder in the death of their near-term son, whom the couple had named Conner. 