Denis agreed to lease a scenic kiosk from the Pitta City Council for two years. After six months, a coal dump was established near the look-out which in windy conditions reduced visibility and left grime on the kiosk and the area. This led to a reduction of business. Denis left the kiosk and refused to make any further rent payments. Required: A-Discuss the basis of Denis defence if sued by the Pitta City Council? B- Would the outcome be any different if, instead of a coal dump, a sewage disposal works had been established in the area?