TASK DEFINITION: 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: while Anthony Salvin used obelisks as water fountains on the Belton House estates in Lincolnshire. Link Information: commissioned the architect Anthony Salvin to undertake improvements to the Estate in 1838 Question: What year was the estate where Salvin used obelisks as water fountains built?

SOLUTION: Answer: 1838

PROBLEM: Context: Examples of illustrated hand scrolls include novels such as Genji Monogatari Emaki, historical writings like The Tale of Great Minister Ban Link Information: both the identity of the illustrator and the organisation of its production remain unknown. Question: Who was the author of the Genji Monogatari Emaki?

SOLUTION: Answer: unknown

PROBLEM: Context: began work on a revamped version of IBM and Microsoft's OS/2 operating system known as "NT OS/2" Link Information: The first version of OS/2 was released in December 1987 Question: When was the operation system developed jointly by IBM and Microsoft first released?

SOLUTION:
Answer: December 1987