The URL of the first link contained in a story which is receiving comments, reshares, or likes.
See also: fb.link.
Filter for comments, reshares, or likes for content that includes a specified URL:
fb.parent.link == "http://www.example.com"
Output type: infinite values possible.
Target service: PYLON for Facebook Topic Data
Tokenized for query filters: Yes
Interaction filter: Yes
Analysis target: Yes
Query filter: Yes
Child analysis target: No