The teacher demonstrates a story with pictures on a chalkboard.
A teacher marks on a chalkboard
Demonstrates a story with pictures on a chalkboard is the same as marks on a chalkboard.
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 x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_chalkboard(x3) & n_mark(x1) & of(x1,x2) & n_teacher(x2))