Two boys with unicycles stand outside of a street shop.
Two boys are waiting for friends.
Stand outside does not necessarily mean waiting for friends.
exists e1 x1 x2 x3 x4.(of(e1,x3) & n_shop(x3) & of(x3,x4) & n_street(x4) & r_outside(e1) & Actor(e1,x1) & v_stand(e1) & with(x1,x2) & n_unicycle(x2) & n_boy(x1) & card_eq_2(x1))
exists e1 x1 x2.(for(e1,x2) & n_friend(x2) & Actor(e1,x1) & v_wait(e1) & n_boy(x1) & card_eq_2(x1))