21) In what year did Klingons first appear in the Star Trek franchise?
22) In what episode of TNG did Spock perform the Kohlinar ritual with Worf?
23) What's the name of the fictional planet that served as the homeland for the Klingon Empire?
24) What is Worf's father's name?
25) Q8 Which Klingon house was Worf part of?