An old woman celebrating her 90th birthday.
A woman is surrounded by family on her birthday.
Just because she is celebrating a birthday doesn't mean that she is surrounded by family.
exists e1 s1 s2 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_celebrate(e1) & n_birthday(x3) & a_90th(s2) & Theme(s2,x3) & of(x3,x1) & n_female(x1) & (x1 = x2) & n_woman(x1) & a_old(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(Actor(e1,x2) & on(x2,x3) & n_birthday(x3) & of(x3,x1) & n_female(x1) & n_family(x2) & Theme(e1,x1) & v_surround(e1) & n_woman(x1))