A man does a jump in the desert on a motorcycle.
The man is in a motorcross race in the desert.
You can not infer he is in motorcross.
exists e1 x1 x2 x3 x4.(n_desert(x3) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & on(x2,x4) & n_motorcycle(x4) & in(x2,x3) & n_jump(x2) & n_man(x1))
exists p1 x1 x4.(n_desert(x4) & n_man(x1) & exists x2 x3.(in(x1,x2) & in(x2,x4) & n_race(x2) & of(x2,x3) & n_motorcross(x3)))