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: The body of Alexander the Great, though by the intrigues of Ptolemy I Soter, it was taken to Memphis Link Information: Ptolemy I Soter (; , Ptolemaîos Sōtḗr "Ptolemy the Savior"; c. 367 BC – January 282 BC) Question: When did the general who took Alexander the Great's body back to Memphis die?

SOLUTION: Answer: January 282 BC)

PROBLEM: Context: The book also discusses about similarities and differences between Indus Valley civilization and early Vedic civilization Link Information: none Question: What is one key difference between the Indus Valley civilization and early Vedic civilizations?

SOLUTION: Answer: none

PROBLEM: Context: California Governor Ronald Reagan, who selected Richard Schweiker as his running mate Link Information: Ronald Wilson Reagan (; February 6, 1911June 5, 2004) Question: What was the age difference between Ronald Reagan and his running mate?

SOLUTION:
Answer: 15