<prompt> Translate the following text to SwahiliWe have said that the features distinguishing case studies from other methods are how sites are selected, how the data are collected, and how they are analyzed.  <response>: Kama ilivyoelezwa hapo juu, mfano wa utafiti wa kesi ni jinsi maeneo yanavyopendekezwa, jinsi data zinakusanywa na jinsi zinavyopimwa. 