Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.

Input: Consider Input: Which semi-aquatic carnivorous mammals belong to the genus 'Lutra'?

Output: otter

Input: Consider Input: Snail fever is caused by organisms of which genus?

Output: schistosoma

Input: Consider Input: Which meat is traditionally used in a Stroganoff dish?
Output: beef