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'.
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Question: Context: The first episode recalls how, fearing anti-German sentiment, the royal house name was changed by King George from the House of Saxe-Coburg and Gotha to the House of Windsor. Link Information:  In 1917, the first World War caused George V to change from "Saxe-Coburg and Gotha" to the House of Windsor in the United Kingdom Question: In what year was the royal house's name change?

Answer: Answer: 1917


Question: Context: where it turns eastward and northeastward, flowing across the northern Great Plains past the city of Billings Link Information: none Question: Who is the current mayor of the city located on the northern Great Plains that the Yellowstone River flow through?

Answer: Answer: none


Question: Context: Graf again defeated Seles in the Hamburg final. Following her tournament victory in German Open in Berlin Link Information: none Question: In what year did Steffi Graf beat Monica Seles in the German Open?

Answer:
Answer: none