question:
Wales followed suit in April 2007, with England introducing the ban in July 2007.
What was the month and year when England banned public smoking?

answer: yes

question:
After the band's six-night stand at New York's Uris Theatre in May 1974, Brian May collapsed and was diagnosed as having hepatitis.
What was Brian May diagnosed with after collapsing in 1974?

answer: yes

question:
At the same time, she became romantically involved with fitness trainer Carlos Leon.
Who was the fitness trainer that Madonna was involved with?

answer: yes

question:
Nonetheless, the annual rate of growth of the Metropolitan Area of Mexico City is much lower than that of other large urban agglomerations in Mexico, a phenomenon most likely attributable to the environmental policy of decentralization.
What is the overall population of Mexico City in 2008?

answer:
no