a dog runs through the woods.
A dog runs after a squirrel into the woods.
The seconds sentence explains the reason that dog is running behind a squirrel
exists e1 x1 x2.(n_wood(x2) & through(e1,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1))
exists e1 x1 x2 x3.(n_wood(x3) & into(e1,x3) & after(e1,x2) & n_squirrel(x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1))