Determine the topic of the question-answer pair.
Question: "what is ratchet from ratchet and clank?";  Answer: "The games take place in a science fiction setting and follow the adventures of Ratchet (an animalistic human-like character known as a Lombax , who is a mechanic) and Clank (a diminutive, sentient robot) as they travel through the universe, saving it from evil forces on a regular basis."? Topic:
Ratchet & Clank
The topic is Ratchet & Clank..