Four people and a child walking in the street.
The family is enjoying the World's Fair.
Not all families walking are at the World's Fair.
exists s1 x1 x2 x3 x4.(n_street(x4) & a_topic(s1) & subset_of(x2,s1) & in(x2,x4) & n_walking(x2) & of(x2,x3) & n_child(x3) & subset_of(x1,s1) & n_people(x1) & card_eq_4(x1))
exists e1 x1 x2 x3.(n_fair(x3) & of(x3,x2) & ne_org_world(x2) & n_family(x1) & Theme(e1,x3) & Actor(e1,x1) & v_enjoy(e1))