<prompt> Translate the following text to EnglishKutokana na Ulimwengu wa Ulimwengu wa mwaka 1960 na sio vinginevyo karibu thuluthi mbili ya watu wa Colorado hawaishi tena.  <response>: To condense from but not otherwise alter the 1960 edition of the World Book About two thirds of the people of Colorado live no more. 