In Facebook Graph API explorer, there is a "with" modifier (along with since, filter, limit etc).
What is it used for?
You can use with
modifier to filter posts that contains a location attatched to them.
From Facebook:
You can retrieve only posts with a location attached by adding with=location to the URL parameters:
https://graph.facebook.com/me/home?with=location
Works for feed (Wall Posts), posts (Posts by the user himself) and home (News Feed).