In this task, You are given an open-domain question that can be answered based on factual information. Your task is to provide \*short\* answer (in a few words only) for the given question. The short answer can be one or more entities or it can also be boolean \*yes\* or \*no\*.
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Question: when was the first game of thrones made

Answer: 2009


Question: who do the avengers fight in infinity war

Answer: Thanos


Question: who introduced a standardized system of weights and measures in china

Answer:
the legendary Yellow Emperor