With the following schema, how can i get the result for this query ?

With the following schema, how can i get the result for this query ?

"The Bacon number of an actor is the length of the shortest path between the actor and Kevin Bacon in the "co-acting" graph. That is, Kevin Bacon (KB) has Bacon number 0; all actors who acted in the same film as KB have Bacon number 1; all actors who acted in the same film as some actor with Bacon number 1 have Bacon number 2, etc. Return all actors whose Bacon number is 2. "