QUESTION: Generate a question with a factual answer?

ANS: Which city notably opted not to become carbon neutral in 2009?

QUESTION: Generate a question with a factual answer?

ANS: Which airport is the second busiest in Australia?

QUESTION: Generate a question with a factual answer?

ANS: What was again revised in May of 2010?

QUESTION: Generate a question with a factual answer?

ANS:
How often does the XPT to Sydney depart?