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: With the outbreak of the Russo-Turkish War in August 1787, Link Information: Russo-Turkish War (1787–1792) Question: What year did the war end that began in August of 1787?
answer:
Answer: 1792


question:
Context: Columbia, formerly Wright's Ferry, is a borough (town) in Lancaster County, Pennsylvania, Link Information: As of the 2010 census, the population was 519,445. Question: What is the current population of the county where Columbia, PA is located?
answer:
Answer: 519,445


question:
Context: he video switched first to Washington, DC; then to Cape Canaveral, Florida; to the Seattle World's Fair; then to Quebec and finally to Stratford, Ontario Link Information: he video switched first to Washington, DC; then to Cape Canaveral, Florida; to the Seattle World's Fair; Question: What date did the event that was broadcast from Seattle by Telstar 1 begin? 
answer:

Answer: April 21, 1962, to October 21, 1962