title: Facebook API: Get Shared Post ID
body: <p>Using FB Graph API, is it possible to check if the post is shared like this one? <a href="https://www.facebook.com/alexey.kosov/posts/10203624447732200">https://www.facebook.com/alexey.kosov/posts/10203624447732200</a></p>
  
  <p>And how to get the original post id?</p>