How can I get all the comments, added to shared link of my website on Facebook?

Question: I have a "like" button on my website, someone clicks it and shares url of my website with his comment.This is posted to Facebook. Som开发者_如何学JAVAe users add comments to this post with shared url. Can I get all those comments? If yes,then how?

If the user has authenticated with your application and granted read_stream permission you could by requesting /me/feed and looking for your site. But otherwise, no, not just by them sharing/liking your page.