745 Subject to section 745.1, the sentence to be pronounced against a person who is to be sentenced to imprisonment for life shall be
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(b) in respect of a person who has been convicted of second degree murder where that person has previously been convicted of culpable homicide that is murder, however described in this Act, that that person be sentenced to imprisonment for life without eligibility for parole until the person has served twenty-five years of the sentence;
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