Detailed 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'.
Q: Context: The world tour to support the album began in June 2016 in Europe Link Information: Europe is divided into about fifty sovereign states of which the Russian Federation is the largest and most populous, Question: How many countries make up the continent where the 2016 world tour began?
A:
Answer: about fifty