A male airborne on a bicycle.
A man is on a bus
a man cannot go on bus and bicycle simultaneously
exists s1 x1 x2.(a_topic(x1) & on(x1,x2) & n_bicycle(x2) & n_airborne(x1) & a_male(s1) & Theme(s1,x1))
exists p1 x1.(exists x2.(on(x1,x2) & n_bus(x2)) & n_man(x1))