A couple show their affection on an escalator by embracing and kissing one another.
The couple is thinking about the penguins.
One couple embracing and kissing while the other couple is thinking.
exists e1 e3 e2 s1 x1 x2 x3 x4.(by(e1,e3) & Theme(e3,x4) & Actor(e3,x1) & v_kiss(e3) & n_thing(x4) & card_eq_1(x4) & a_another(s1) & Theme(s1,x4) & by(e1,e2) & Actor(e2,x1) & v_embrace(e2) & on(e1,x3) & n_escalator(x3) & Theme(e1,x2) & Actor(e1,x1) & v_show(e1) & n_affection(x2) & of(x2,x1) & n_thing(x1) & n_couple(x1))
exists e1 x1 x2.(n_penguin(x2) & n_couple(x1) & about(e1,x2) & Actor(e1,x1) & v_think(e1))