The Illinois Supreme Court next week will hear oral arguments in a case where a charging document used to indict a defendant did not spell out the predicate offense of his felony murder charge.Defendant Robert Carey was convicted of first-degree felony murder while committing a forcible felony and sentenced to 40 years in prison for his role in a January 2011 armed robbery that killed his brother.But the 1st District Appellate Court in August 2016 reversed Carey’s conviction after finding his charging document did …