Four men wearing plaid sit on chairs.
A group of men seat themselves
Four men together is a group. Sit and having a seat are the same thing.
exists e1 e2 x1 x2 x3 x4.(on(e2,x4) & n_chair(x4) & Actor(e2,x1) & v_sit(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_plaid(x3) & (x1 = x2) & n_man(x1) & card_eq_4(x1))
exists x1 x2 x3.(a_topic(x1) & n_person(x1) & of(x1,x2) & n_seat(x2) & of(x2,x3) & n_man(x3) & n_group(x1))