An elderly lady wearing a lampshade and opening presents.
The woman was celebrating her 21st birthday.
An elderly lady is older than 21. Elderly ladies don't usually wear lampshades.
exists e1 s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & subset_of(x5,x3) & n_present(x5) & of(x5,x6) & n_opening(x6) & subset_of(x4,x3) & n_lampshade(x4) & (x1 = x2) & n_lady(x1) & a_elderly(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_birthday(x2) & a_21st(s1) & Theme(s1,x2) & of(x2,x1) & n_female(x1) & n_woman(x1) & Theme(e1,x2) & Actor(e1,x1) & v_celebrate(e1))