Input (grade 13): At the end of March 2008, Markus RÃ bke, one of the keepers who helped rear Knut, reported that the bear should leave the zoo as soon as possible in order to help him acclimate to a life alone.
Output (grade 10): At the end of March 2008, Markus RÃ bke, one of the zookeepers who helped raise Knut, said the bear should leave the zoo to help him get used to living alone.