Input question: Which T.V. sitcom starred Donald Sinden, Windsor Davies and Honor Blackman?

Output answer: never twain

Input question: The name of which fish means to struggle?

Output answer: flounder

Input question: Which English engineer built the Menai tubular girder bridge in the UK, opened in 1850, and the Victoria Bridge over the Hudson in Canada in 1859?

Output answer: robert stephenson

Input question: Cynology is the study of which animals?

Output answer:
dogs