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: Consider Input: Context: Lord Lindsay's private observatory at Dun Echt, Aberdeenshire. Link Information: Lord Lindsay's private observatory at Dun Echt, Aberdeenshire.  Question: When was the town where Lord Lindsay's private observatory is located founded?

Output: Answer: 1820s 


Input: Consider Input: Context: In 1180, Ingvar Yaroslavich joined Ryurik Rostislavich in his struggle against Sviatoslav Vsevolodovich of Chernihiv. Link Information: none Question: How old was Ryurik Rostislavich when Ingvar joined him in 1180?

Output: Answer: none


Input: Consider Input: Context: In 1975, Deep Purple guitarist Ritchie Blackmore founded the band Rainbow and hired Dio to be his lead singer Link Information: none Question: Dio joined a band with how many members in 1975?


Output: Answer: none