 
 <prompt> Wetin SODIS dey do to water? Based on di question wey dey before, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: ```Solar water disinfection (SODIS) involve exposing water-filled plastic polyethylene terephthalate (PET) bottles to sunlight for several hours. Exposure times dey vary depending on weather and climate from a minimum of six hours to two days during fully overcast conditions. E dey recommended by the World Health Organization as a viable method for household water treatment and safe storage. Over two million people for developing countries dey use dis method for their daily drinking water.``` 