A man in some sort of establishment, smiling while he is taking off or putting on glasses.
A man is looking for a pair of glasses at a department store.
Not all establishments are a department store.  Taking off and putting on glasses does not imply he is looking for a pair of glasses.
exists e1 p1 x1 x2 x3 x4.((exists e2 s1 x5.(a_off(s1) & Manner(e2,s1) & Theme(e2,x5) & Actor(e2,x1) & v_take(e2) & n_glass(x5)) | exists e3 x6.(on(e3,x6) & n_glass(x6) & Actor(e3,x1) & v_put(e3))) & n_male(x1) & while(e1,p1) & Actor(e1,x1) & v_smile(e1) & in(x1,x2) & of(x2,x4) & n_establishment(x4) & Time(x2,x3) & n_sort(x3) & n_thing(x2) & n_man(x1))
exists e1 x1 x2 x3 x4 x5.(at(e1,x4) & n_store(x4) & of(x4,x5) & n_department(x5) & for(e1,x2) & of(x2,x3) & n_glass(x3) & n_pair(x2) & Actor(e1,x1) & v_look(e1) & n_man(x1))