Two employees are taking a break on the stairs.
Two people are sitting at the table having a coffee.
A table would not be on stairs and vice versa.
exists e1 x1 x2 x3.(n_stair(x3) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & on(x2,x3) & n_break(x2) & n_employee(x1) & card_eq_2(x1))
exists e1 e2 x1 x2 x3 x4.(n_table(x2) & at(e1,x2) & Theme(e2,x4) & Actor(e2,x3) & v_have(e2) & n_coffee(x4) & (x2 = x3) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_2(x1))