The teacher demonstrates a story with pictures on a chalkboard.
A teacher reads a book sitting at her desk.
If the teacher is drawing pictures on a chalkboard, she is not reading a book.
exists e1 x1 x2 x3 x4.(n_teacher(x1) & on(e1,x4) & n_chalkboard(x4) & Theme(e1,x2) & Actor(e1,x1) & v_demonstrate(e1) & with(x2,x3) & n_picture(x3) & n_story(x2))
exists e2 e1 x1 x2 x3 x4.(Theme(e2,x2) & Actor(e2,x1) & v_read(e2) & at(e1,x4) & n_desk(x4) & of(x4,x1) & n_female(x1) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_book(x2) & n_teacher(x1))