Input question: What is the English title of the first book of Stieg Larsson's 'Millennium' trilogy?

Output answer: girl with dragon tattoo

Input question: According to cliche, what is the mother of invention?

Output answer: necessity

Input question: SE Which London Institution is based at 10 Paternoster Sq.?

Output answer: stock exchange

Input question: What is the maximum number of letters and spaces that can be in the name of a racehorse?

Output answer:
18