A man on a bike in midair
A man is boxing.
The man cannot be midair on a bike and boxing at the same time
exists x1 x2 x3.(a_topic(x1) & on(x1,x2) & in(x2,x3) & n_midair(x3) & n_bike(x2) & n_man(x1))
exists e1 x1.(Actor(e1,x1) & v_box(e1) & n_man(x1))