A group of people are sitting in some rows of wooden seats.
Nobody is in a seat.
If a group of people are sitting in seats, then it can't be true that nobody is in a seat.
exists e1 s1 x1 x2 x3 x4.(in(e1,x3) & of(x3,x4) & n_seat(x4) & a_wooden(s1) & Theme(s1,x4) & n_row(x3) & Actor(e1,x1) & v_sit(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
-exists p1 x1.(exists x2.(in(x1,x2) & n_seat(x2)) & n_person(x1))