A swimmer in an indoor pool braces himself before hitting the water.
A man is watching ballet.
One cannot be watching a ballet while swimming in an indoor pool.
exists e1 s1 x1 x2 x3 x4 x5.(n_water(x5) & a_topic(x1) & in(x1,x2) & Theme(e1,x5) & Actor(e1,x4) & v_hit(e1) & (x2 = x4) & n_male(x2) & n_brace(x2) & of(x2,x3) & n_pool(x3) & a_indoor(s1) & Theme(s1,x2) & n_swimmer(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_ballet(x2) & n_man(x1))