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'.
Problem:Context: The ZOO Bratislava () is a zoo in Bratislava, Slovakia. Link Information: Bratislava (, , ; or ; ) is the capital of Slovakia. With a population of about 430,000, it is one of the smaller capitals of Europe but still the country's largest city. Question: What is the difference in population between the country and the city that the zoo is located in?
Solution:
Answer: 5.2