A young man in a tie, pushing his bike.
A young man is pushing a shopping cart.
There can either be a young man pushing his bike or a young man pushing a shopping cart.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_push(e1) & n_bike(x4) & of(x4,x1) & n_male(x1) & (x1 = x3) & in(x1,x2) & n_tie(x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_push(e1) & n_cart(x2) & of(x2,x3) & n_shopping(x3) & n_man(x1) & a_young(s1) & Theme(s1,x1))