Task: Question Generation
Input (English): Passage: With 1,210,193,422 residents reported in the 2011 provisional census report, India is the world's second-most populous country. Its population grew by 17.64% during 2001–2011, compared to 21.54% growth in the previous decade (1991–2001). The human sex ratio, according to the 2011 census, is 940 females per 1,000 males. The median age was 27.6 as of 2016. The first post-colonial census, conducted in 1951, counted 361.1 million people. Medical advances made in the last 50 years as well as increased agricultural productivity brought about by the "Green Revolution" have caused India's population to grow rapidly. India continues to face several public health-related challenges.Life expectancy in India is at 68 years, with life expectancy for women being 69.6 years and for men being 67.3. There are around 50 physicians per 100,000 Indians. Migration from rural to urban areas has been an important dynamic in the recent history of India. The number of Indians living in urban areas grew by 31.2% between 1991 and 2001. Yet, in 2001, over 70% still lived in rural areas. The level of urbanisation increased further from 27.81% in the 2001 Census to 31.16% in the 2011 Census. The slowing down of the overall growth rate of population was due to the sharp decline in the growth rate in rural areas since 1991. According to the 2011 census, there are 53 million-plus urban agglomerations in India; among them Mumbai, Delhi, Kolkata, Chennai, Bangalore, Hyderabad and Ahmedabad, in decreasing order by population. The literacy rate in 2011 was 74.04%: 65.46% among females and 82.14% among males. The rural-urban literacy gap, which was 21.2 percentage points in 2001, dropped to 16.1 percentage points in 2011. The improvement in literacy rate in rural area is two times that in urban areas. Kerala is the most literate state with 93.91% literacy; while Bihar the least with 63.82%.
Output (English): As of 2011, what was the most populous city in the second-most populous country in the world?