adcelannotate = {"mobilepaywallcategory" : "MOBILE_PREM-LOCAL","nativepaywallcategory" : "NATIVE_PREM-LOCAL"};COSCHOCTON, Ohio -- A man charged with robbing, killing and burning the bodies of an elderly Ohio couple has pleaded guilty and has been sentenced to life in prison without parole. Thirty-year-old Robert Clark avoided a possible death sentence by pleading guilty today to aggravated murder and other charges in the slayings of 88-year-old Doyle Chumney and his 79-year-old wife, Lillian.