<prompt> Pedzisa mutsara unotevera: Kusarudzwa kwemutungamiri wePlaid Cymru muna 1981 kwakaitwa zvichitevera kusiya basa kwaGwynfor Evans, uyo akanga atungamirira bato racho kubvira muna 1945. Sarudzo yakatevera zvose kukundwa musarudzo huru ya1979 yaEvans muCarmarthen uye kukundwa pakutanga kwegore iroro kwebato reHongu mu  <response>: Referendamu yokugoverwa simba muna 1979. 