A man is doing a trick on a bicycle in the air.
He is a professional bike competitor.
one can be a professional bike competitor when he is performing trick on his bike
exists e1 x1 x2 x3 x4.(n_air(x4) & in(e1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & on(x2,x3) & n_bicycle(x3) & n_trick(x2) & n_man(x1))
exists p1 x1.(n_male(x1) & exists s1 x2 x3.((x1 = x2) & n_competitor(x2) & of(x2,x3) & n_bike(x3) & a_professional(s1) & Theme(s1,x2)))