A man runs down a mountain.
The man is in a library.
Someone who runs down a mountain is outside and performing a lot of action, that is completely different than someone who is in a library (inside) and no running would be happening.
exists e1 x1 x2.(down(e1,x2) & n_mountain(x2) & Actor(e1,x1) & v_run(e1) & n_man(x1))
exists p1 x1.(n_man(x1) & exists x2.(in(x1,x2) & n_library(x2)))