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The Keeper of the River An old man had been working for many years for a town.His job was to clear away natural waste from the pool water in the hills, which made up the lovely river flowing through the town nearby.Quietly and  regularly  , the old man guarded the hills,  removed  the leaves and branches, and cleaned up the dirt that would have  [MASK]  and polluted the fresh flow of water.The town soon became a popular attraction for tourists.Elegant swans floated along the clear river and the view was so beautifu  beyond  words.