A woman in a black and white shirt smiles.
A female student is smiling.
The woman is not necessarily a student.
exists e1 s1 s2 x1 x2.(Actor(e1,x1) & v_smile(e1) & in(x1,x2) & n_shirt(x2) & a_white(s2) & Theme(s2,x2) & a_black(s1) & Theme(s1,x2) & n_woman(x1))
exists e1 s1 x1.(Actor(e1,x1) & v_smile(e1) & n_student(x1) & a_female(s1) & Theme(s1,x1))