Input question: What valuable commodities were called as 'sweat of the sun' and 'tears of the moon' by the Incas?

Output answer: gold and silver

Input question: What were the frequent subjects of French impressionist painter Dgas?

Output answer: ballet dancers

Input question: The multi Oscar winning Chariots of Fire was based on the lives of which 2 athletes?

Output answer: eric liddell and harold abrahams

Input question: Of what is 'dendrophobia' a fear?

Output answer:
trees