Instructions: In this task, you're given a statement, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
Input: Context: The Treaty of Nanjing (1842), which put an end to the conflict, made Fuzhou (then known to Westerners as Foochow) one of five Chinese treaty ports, and it became completely open to Western merchants and missionaries. was one of the most important Protestant mission fields in China. On January 2, 1846, Link Information: The Daoguang Emperor (16 September 1782 26 February 1850, Chinese:) Question: How many years had the Daoguang Emperor been in power when the first Protestant mission was granted entry?
Output:
Answer: 64