The death of a 47-year-old Greater Grand Crossing neighborhood woman marks the fifth person to die, at least in part, due to the heat since July 1 in the Chicago area, officials said Friday. An autopsy Friday determined the primary cause of Stephanie Rodriguez's death was complications from heat stroke, according to the Cook County medical examiner's office. A secondary cause was schizophrenia. Rodriguez, of the 700 Block of East 76th Street, suffered the injuries at West 53rd Street and South