TASK DEFINITION: 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.
PROBLEM: Which semi-aquatic carnivorous mammals belong to the genus `Lutra'?

SOLUTION: otter

PROBLEM: Who wrote the poem 'The Lady of the Lake'?

SOLUTION: walter scott

PROBLEM: On which river does the High Force waterfall stand in England?

SOLUTION:
river tees