An old man is sleeping at a table in front of a book shelf.
A man falls asleep at a library.
Just because he is in front of a book shelf doesn't mean he is at a library.
exists e1 s1 x1 x2 x3 x4 x5.(at(e1,x2) & in(x2,x3) & of(x3,x4) & n_shelf(x4) & of(x4,x5) & n_book(x5) & n_front(x3) & n_table(x2) & Actor(e1,x1) & v_sleep(e1) & n_man(x1) & a_old(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(at(e1,x2) & n_library(x2) & a_asleep(s1) & Manner(e1,s1) & Actor(e1,x1) & v_fall(e1) & n_man(x1))