The Facebook extension provides four operators "Find Pages", "Find Page Content", "Find Comments" and "Find Reactions". The Find Pages operator searches for Pages based on a string query. The Find Page Content operator searches for posts for a particular Page ID.

With the Find pages operator, you can specify a Facebook user and receive a list of pages of the query that you have given as input. The list of Pages contains additional data with context of the Page Id.       

With the Find Page Content operator, you can specify a Facebook Page and receive a list of contents of that Page

With the Find Comments operator, you can specify a Post ID and receive a list of comments, their time of creation, ID and number of likes they received.   

Product page: Facebook Extension