Pedestrians walking past a 50% off sale.
A group of people walking to the ice cream shop.
walking past doesn't imply that the people are walking to the ice cream shop.
exists e1 x1 x2 x3 x4.(a_topic(x1) & past(e1,x3) & off(x3,x4) & n_sale(x4) & n_percent(x3) & card_eq_50(x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_pedestrian(x1))
exists e1 x1 x2 x3 x4 x5 x6.(n_shop(x4) & of(x4,x6) & n_cream(x6) & of(x4,x5) & n_ice(x5) & a_topic(x1) & of(x1,x2) & to(e1,x4) & Actor(e1,x3) & v_walk(e1) & (x2 = x3) & n_people(x2) & n_group(x1))