Four people in costumes stand in a lightly-wooded area while a bystander looks at them.
no body else is there to notice anything
Whether there is four people or nobody
exists e1 p1 s1 x1 x2 x3.(exists e2 x4.(at(e2,x1) & Actor(e2,x4) & v_look(e2) & n_bystander(x4)) & n_thing(x1) & while(e1,p1) & in(e1,x3) & n_area(x3) & a_lightly-wooded(s1) & Theme(s1,x3) & Actor(e1,x1) & v_stand(e1) & in(x1,x2) & n_costume(x2) & n_people(x1) & card_eq_4(x1))
-exists x1.(-exists p1 s1 x2.(Topic(s1,p1) & all x3.(n_thing(x3) -> exists e1.(Theme(e1,x3) & Actor(e1,x1) & v_notice(e1))) & Theme(s1,x2) & a_there(s1) & r_else(x2) & n_body(x2)) & r_else(x1) & n_body(x1))