<prompt> Translate the following text to EnglishWaendesha baiskeli wawili wa mlimani wanasimama nyuma ya kilima kikubwa cha udongo huku mwendesha baiskeli mwingine akifanya ujanja wa uigizaji hewani.  <response>: Two mountain bikers stand behind a large dirt hill while another biker performs an acrobatic trick in midair. 