A female is opening up a present.
She is opening her christmas present.
Not all presents are Christmas presents. It could be a birthday present.
exists e1 s1 x1 x2.(a_up(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_open(e1) & n_present(x2) & n_female(x1))
exists e1 s1 x1 x2 x3.(n_christmas(x2) & of(x2,x1) & n_female(x1) & n_female(x1) & Theme(e1,x2) & Actor(e1,x1) & v_open(e1) & Theme(s1,x3) & a_present(s1) & (x2 = x3))