Can we post Actions on an object outside of the app (ie FB Page, FB Place)?

Is it at all possible to post an action (owned by the app) to an object (NOT owned by the app)? Specifically on Faceook Page and Places, objects owned by FB.

For example I want to create an action called "shop", so that I can create the action

"John drank *Coke*"

in which Coke refers to the FB Page.

I have done a test via the Graph API Explorer and it seems that the app's action POST must refer to an object also owned by the same app. Mind you, I also do not know what shud be syntax to refer to objects owned by FB.

You can tag a place to a post but it will simply prefix it with 开发者_运维问答" -at Walmart"

Yes, this is possible. To set the "at Walmart" part, set the action's "place" field when creating an action via a POST. For example, you can pass this:

?place=https://www.facebook.com/pages/Pizzeria-Delfina/53645450697

which should result in setting the place on an action like:

"place": {
    "location": {
        "city": "San Francisco, CA", 
        "zip": "94110", 
        "country": 398, 
        "region": 0, 
        "address": "3611 18th Street/2406 California St.", 
        "id": 2421836
    }, 
    "id": "53645450697", 
    "name": "Pizzeria Delfina"
}, 

Documentation on the basic action properties is here:

https://developers.intern.facebook.com/docs/beta/opengraph/actions/#create