Two people are standing next to a waterway canal.
People walk along the canal
People doesn't indicate two, and walk isn't the same as standing.
exists e1 x1 x2 x3.(to(e1,x2) & n_canal(x2) & of(x2,x3) & n_waterway(x3) & r_next(e1) & Actor(e1,x1) & v_stand(e1) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_canal(x2) & along(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_people(x1))