Two teenagers are staring across a table.
The two teenagers are having a staring contest.
Two teenagers staring across a table are not always having a staring contest.
exists e1 x1 x2.(across(e1,x2) & n_table(x2) & Actor(e1,x1) & v_stare(e1) & n_teenager(x1) & card_eq_2(x1))
exists e1 e2 x1 x2.(n_teenager(x1) & card_eq_2(x1) & Theme(e2,x2) & Actor(e2,x1) & v_have(e2) & n_contest(x2) & Actor(e1,x2) & v_stare(e1))