A teacher teaching about folic acid and how it helps neurulation.
A teacher is reading a literature book to students.
Reading a literature book has nothing to do with teaching about folic acid.
(x)
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_read(e1) & to(x2,x4) & n_student(x4) & n_book(x2) & of(x2,x3) & n_literature(x3) & n_teacher(x1))