Question: When did the afghanistan war start and end?
Answer: 7 October 2001 -- present
Disambiguated annotations:
qaPairs: question: When did the afghanistan war first phase start?
answer: 7 October 2001
question: When did the afghanistan war first phase  end?
answer: 28 December 2014
question: When did the afghanistan war second phase start?
answer: 1 January 2015
question: When did the afghanistan war second phase end?
answer: present