<prompt> Translate the following text to SwahiliSemistructured approaches may be appropriate for critical instance case studies involving multiple sites, particularly if more than one investigator was responsible for collecting data for several sites.  <response>: Njia za nusu-mfumo zinaweza kuwa sahihi kwa ajili ya masomo ya kesi muhimu ya mfano unaohusisha maeneo mengi, hasa kama zaidi ya mtafiti mmoja alikuwa na jukumu la kukusanya data kwa maeneo kadhaa. 