A Beaumont man has been sentenced to 50-years in prison for sexually assaulting a child. 40-year old Stevie Blaschke Hanke was convicted by a JeffersonCounty jury yesterday for sexually assaulting a 9 year old girl he was watching while her mother was shopping. Hanke must serve at least 25 years of the sentence before he becomes eligible for parole. He was sentenced by Senior Criminal District Judge Larry Gist following his conviction.