instruction:
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'.
question:
Context: Hackleman and the 16th Indiana were sent to the Eastern Theater where they were engaged at the Battle of Ball's Bluff. Link Information: The Battle of Ball's Bluff in Loudoun County, Virginia on October 21, 1861, Question: What city was the battle in that the 16th Indiana Volunteer Infantry fought in the Eastern Theater?
answer:
Answer: Loudoun County

question:
Context: One such Christian was John of Damascus (c. 676749 AD), who was familiar with Islam and Arabic. Link Information: none Question: How old was John of Damascus when the Islamic Caliphate overtook the land of his home?
answer:
Answer: none

question:
Context: Many prefabricated concrete structures, common in the former Warsaw Pact countries, were modernized Link Information: none Question: What countries were part of the pact that saw prefabricated concrete structures modernized?
answer:
Answer: none