The website(s) for the inferred topics for a story.
Topics are individual items in the Facebook social graph. A topic can be referred to with a FBID (Facebook id). Please refer to Namespace Families for further information.
Note that the 'website' can be a single fully qualified URL or a list of URLs. For example:
http://www.lamborghini.com/ http://lamborghinistore.com http://twitter.com/lamborghini http://youtube.com/lamborghini http://www.google.com/+Lamborghini
Thus, it is better to use the contains operator for filtering rather than the equals (==) operator.
The protocol might be present but it can be omitted.
See also: fb.parent.topics.website.
Filter for stories where the website in the inferred topics is datasift.com:
fb.topics.website contains "http://datasift.com"
Filter for stories where the website in the inferred topics is amazon.com or amazon.co.uk:
fb.topics.website in "http://amazon.com, http://amazon.co.uk"
Target service: PYLON for Facebook Topic Data
Tokenized for query filters: Yes
Interaction filter: Yes
Analysis target: No
Query filter: No
Child analysis target: No