Input question: Graves Disease is caused by a malfunction of which gland in the human body?

Output answer: thyroid

Input question: Which country has borders with Brazil, Paraguay and Peru?

Output answer: bolivia

Input question: The Bruce Highway, the longest in Queensland, runs for 1,700km from Brisbane to which other city?

Output answer: cairns

Input question: What widely used solvent and compound with the symbol (CH3)2CO smells of pear-drops and is in nail polish remover?

Output answer:
acetone