A Stanislaus County man who ran over his partner with his pickup truck two years ago was sentenced today to four years in state prison. Ronald Paul, 38, of Oakdale, pleaded no contest on May 10 to vehicular manslaughter for the July 23, 2003, death of Craig Robertson, 37, also of Oakdale, who had been his partner for nine years. According to authorities, the two men were returning from a street fair in San Francisco