 
 <prompt> How sun dey touch bottles wen dem dey use SODIS? Given di last question, write one context wey get di answer. E fit be 1 - 20 sentences. Context: <response>: Solar water disinfection (SODIS) involve to expose water wey full plastic polyethylene terephthalate (PET) bottles to sunlight for some hours. Exposure times fit dey different based on weather and climate from six hours reach two days during fully overcast conditions. World Health Organization recommend am as one good method for treating water for house and safe storage. Over two million people for developing countries dey use dis method for their daily drinking water. 