People are walking in the city during the evening.
A group of people are out touring a city one evening.
Not all people walking in the city are out touring a city.
exists e1 x1 x2 x3.(n_evening(x3) & n_city(x2) & during(e1,x3) & in(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_people(x1))
exists e1 s1 x1 x2 x3 x4 x5.(a_out(s1) & Manner(e1,s1) & Time(e1,x5) & card_eq_1(x5) & Time(e1,x4) & n_evening(x4) & Theme(e1,x3) & Actor(e1,x1) & v_tour(e1) & n_city(x3) & of(x1,x2) & n_people(x2) & n_group(x1))