<prompt> Translate the following text to SwahiliHe wasnt at all sure of how much he could extrapolate from what hed read in the book on Applied Semantics, but he knew he needed a control--a symbol of the symbol, in this case.  <response>: Hakuwa na uhakika kabisa ni kiasi gani angeweza kuhitimisha kutoka kwa kile alichokuwa amesoma katika kitabu cha Applied Semantics, lakini alijua alihitaji udhibiti - ishara ya ishara, katika kesi hii. 