<prompt> Translate the following text to SwahiliThe villas were built for Ottoman traders and overseers, but were abandoned in the exchange of populations in the 1920s.  <response>: Nyumba hizo zilijengwa kwa ajili ya wafanyabiashara na wasimamizi wa Ottoman, lakini ziliachwa katika kubadilishana kwa idadi ya watu katika miaka ya 1920. 