a biker jumps over a pile of dirt.
The man is riding a red bike.
Not all bikers are men and not all bikes are red.
exists e1 x1 x2 x3.(over(e1,x2) & of(x2,x3) & n_dirt(x3) & n_pile(x2) & Actor(e1,x1) & v_jump(e1) & n_biker(x1))
exists e1 s1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & a_red(s1) & Theme(s1,x2))