question: OPTIONS:
- yes
- no
Dogs bear their litters roughly 58 to 68 days after fertilization, with an average of 63 days, although the length of gestation can vary.
What is the average length of dog pregnancy?

answer: yes

question: OPTIONS:
- yes
- no
The Eastern Han, also known as the Later Han, formally began on 5 August 25, when Liu Xiu became Emperor Guangwu of Han.
On what date did the Eastern Han dynasty begin?

answer: yes

question: OPTIONS:
- yes
- no
The top few teams may be promoted to a higher division, and one or more of the teams finishing at the bottom are relegated to a lower division.
Who operate league systems?

answer: no

question: OPTIONS:
- yes
- no
According to the QS World University Rankings 2015/16, London has the greatest concentration of top class universities in the world and the international student population around 110,000 which is also more than any other city in the world.
What professional services network named London the world's capital of higher education?

answer:
no