This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous General Anesthesia, Subject name: Anaesthesia
[{'content': 'Ether was first used as an anaesthetic by? \nSelect and explain. \nA. Priesly, B. Morton, C. Wells, D. Simpson', 'role': 'user'}, {'content': 'Answer: B \nExplanation: ANSWER: (B) MortonREF: http://en.wikipedia.org/wiki/William_T_G_MortonWilliam Thomas Green Morton (August 9, 1819 - July 15, 1868) was an American dentist who first publicly demonstrated the use of inhaled ether as a surgical anaesthetic in 1846', 'role': 'assistant'}]