input: What is the answer to this question? who is canada's longest serving prime minister?

output: William Lyon Mackenzie King

input: What is the answer to this question? when is flash season 4 coming on tv?

output: October 10, 2017

input: What is the answer to this question? what type of rna has an amino acid attached and is used in the formation of a peptide chain?

output:
tRNA