Pedestrians walking past a 50% off sale.
A 50% off sale is obscured by a group of pedestrians.
The pedestrians are walking past the 50% sale, obscuring it from view.
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.(Actor(e1,x3) & of(x3,x4) & n_pedestrian(x4) & n_group(x3) & Theme(e1,x1) & v_obscure(e1) & off(x1,x2) & n_sale(x2) & n_percent(x1) & card_eq_50(x1))