Two girls, wearing protective goggles, in a laboratory going through a book.
The book is about chemistry.
Not all books in a laboratory are about chemistry.
exists e2 e1 s1 x1 x2 x3 x4 x5.(in(e1,x3) & through(e2,x5) & n_book(x5) & Actor(e2,x4) & v_go(e2) & (x3 = x4) & n_laboratory(x3) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_goggles(x2) & a_protective(s1) & Theme(s1,x2) & n_girl(x1) & card_eq_2(x1))
exists p1 x1.(n_book(x1) & exists x2.(about(x1,x2) & n_chemistry(x2)))