A kid is performing karate in a gymnasium.
There is a kid playing an instrument.
A kid cannot perform karat and play an instrument simultaneously.
exists e1 x1 x2 x3.(in(e1,x3) & n_gymnasium(x3) & Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_karate(x2) & n_kid(x1))
exists p1 x1 e1 x2 x3 x4.((x1 = x2) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & n_instrument(x4) & (x2 = x3) & n_kid(x2))