<prompt> Translate the following text to SwahiliThe uncertainties of schedules and frequency of strike action gradually disappeared in the 1990s, but the occasional wrinkle still needs to be ironed out.  <response>: Uhakika wa ratiba na mzunguko wa mgomo ulipotea hatua kwa hatua katika miaka ya 1990, lakini bado kuna shida ya mara kwa mara ambayo inahitaji kusafishwa. 