A blond boy and a blond girl open their gifts on Christmas while the parents watch.
Two friends open gifts alone.
They aren't opening gifts alone, if their parents are watching.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6 x7.(n_watch(x6) & of(x6,x7) & n_parent(x7) & ne_tim_christmas(x5) & while(e1,x6) & on(e1,x5) & Theme(e1,x4) & Actor(e1,x1) & v_open(e1) & n_gift(x4) & of(x4,x2) & n_thing(x2) & subset_of(x3,x1) & n_girl(x3) & a_blond(s2) & Theme(s2,x3) & subset_of(x2,x1) & n_boy(x2) & a_blond(s1) & Theme(s1,x2))
exists s1 x1 x2.(a_topic(x1) & r_alone(x1) & n_gift(x1) & a_open(s1) & Theme(s1,x1) & of(x1,x2) & n_friend(x2) & card_eq_2(x1))