Is there a way to interact with Siri Answers?
I'm afraid so, since they are just a result of your command. The outcome isn't like a webpage where you can click on and on to obtain more information.

But you can still Google or Wikipedia as library in combination with Siri. Whenever you start your command with 'Wikipedia', Siri will search your local Wikipedia for the command you've just said. 

For example, if you give Siri the command Wikipedia Stack Exchange Siri will search Wikipedia with the Stack Exchange search term:  



Same goes for Google. Just add Google in front of your command, and you're good to go!