Man in orange shirt holds ice cream while standing next to ice cream cart.
A man wearing orange is kneeling behind a lemonade stand.
In the first sentence the man is standing while in the second, he is kneeling. The man cannot be standing and kneeling at the same time therefore, this is contradictory.
exists e1 e2 x1 x2 x3 x4 x5 x6 x7 x8.(while(e1,e2) & to(e2,x6) & n_cart(x6) & of(x6,x8) & n_cream(x8) & of(x6,x7) & n_ice(x7) & r_next(e2) & Actor(e2,x1) & v_stand(e2) & Theme(e1,x4) & Actor(e1,x1) & v_hold(e1) & n_cream(x4) & of(x4,x5) & n_ice(x5) & in(x1,x2) & n_shirt(x2) & of(x2,x3) & n_orange(x3) & n_man(x1))
exists e1 e2 s1 x1 x2 x3 x4.(behind(e2,x4) & n_stand(x4) & a_lemonade(s1) & Theme(s1,x4) & Actor(e2,x1) & v_kneel(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_orange(x3) & (x1 = x2) & n_man(x1))