Groups of men sit at banquet tables.
The men are dancing on top of tables.
Men can't sit and dance.
exists e1 x1 x2 x3 x4.(at(e1,x3) & n_table(x3) & of(x3,x4) & n_banquet(x4) & Actor(e1,x1) & v_sit(e1) & of(x1,x2) & n_man(x2) & n_group(x1))
exists e1 x1 x2 x3.(n_man(x1) & on(e1,x2) & of(x2,x3) & n_table(x3) & n_top(x2) & Actor(e1,x1) & v_dance(e1))