A bearded man jumps his skateboard over a shopping cart.
The bearded man is riding a bicycle.
One can't ride a skateboard and bicycle at the same time.
exists e1 s1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_jump(e1) & over(x2,x3) & n_cart(x3) & of(x3,x4) & n_shopping(x4) & n_skateboard(x2) & of(x2,x1) & n_male(x1) & n_man(x1) & a_bearded(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_man(x1) & a_bearded(s1) & Theme(s1,x1) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bicycle(x2))