A man with a book is leaning on a pole in the sidewalk.
A man with a book is sitting in a chair.
Leaning on a pole suggests the man is standing, rather than sitting in a chair.
exists e1 x1 x2 x3 x4.(n_sidewalk(x4) & in(e1,x4) & on(e1,x3) & n_pole(x3) & Actor(e1,x1) & v_lean(e1) & with(x1,x2) & n_book(x2) & n_man(x1))
exists e1 x1 x2 x3.(in(e1,x3) & n_chair(x3) & Actor(e1,x1) & v_sit(e1) & with(x1,x2) & n_book(x2) & n_man(x1))