<prompt> Translate the following text to SwahiliThe concept of a professional lifeguard is unknown on Ibiza and Formentera alike; some beach bars do keep first-aid supplies.  <response>: Wazo la mlinzi wa kuokoa uhai wa kitaalamu halijulikani katika Ibiza na Formentera vilevile; baa fulani za pwani huhifadhi vifaa vya matibabu ya kwanza. 