Where a plaintiff appeals a grant of summary judgment by arguing that genuine issues of material fact remain, they must demonstrate the existence of such issues by positive and affirmative proof via evidence or testimony in order to have the judgment overturned.The 1st District Appellate Court affirmed a decision from Cook County Circuit Judge Patricia O’Brien Sheahan.On the evening of March 5, 2014, Leslie Cole was taking her garbage out. She descended the outside stairwell of her building in which she lived, when …