    Sentence 1: arid they just put instructors out  there and you you sign UP for instruction and.  they just give you an arm band and if you see an  instructor who's not doing anything you just tap.  firs on the shoulder and ask him questions and  they'll show you things    Sentence 2: The instructors. are marked with  armbands, and anytime you want: to know  anything,-you just find one.of them.    *