<prompt> Translate the following text to SwahiliBut it was a golden age--a time of innovation and intellectual excitement, when all of economics seemed up for reinvention--and Kelvin Lancaster was one of those who made it so.  <response>: Lakini ilikuwa ni enzi ya dhahabu - wakati wa uvumbuzi na msisimko wa kiakili, wakati uchumi wote ulionekana kwa kuunda upya - na Kelvin Lancaster alikuwa mmoja wa wale waliofanya hivyo. 