Question: Roughly one-third of the world's population has been infected with M. tuberculosis, with new infections occurring in about 1% of the population each year. However, most infections with M. tuberculosis do not cause TB disease, and 9095% of infections remain asymptomatic. In 2012, an estimated 8.6 million chronic cases were active. In 2010, 8.8 million new cases of TB were diagnosed, and 1.201.45 million deaths occurred, most of these occurring in developing countries. Of these 1.45 million deaths, about 0.35 million occur in those also infected with HIV.
Is there an answer to this question: How many people died in developing countries from TB?

Answer: unanswerable

Question: In 1940, non-Hispanic whites constituted 86.8% of the city's population. The population peaked at more than two million residents in 1950, then began to decline with the restructuring of industry, which led to the loss of many middle-class union jobs. In addition, suburbanization had been drawing off many of the wealthier residents to outlying railroad commuting towns and newer housing. Revitalization and gentrification of neighborhoods began in the late 1970s and continues into the 21st century, with much of the development in the Center City and University City areas of the city. After many of the old manufacturers and businesses left Philadelphia or shut down, the city started attracting service businesses and began to more aggressively market itself as a tourist destination. Glass-and-granite skyscrapers were built in Center City. Historic areas such as Independence National Historical Park located in Old City and Society Hill were renovated during the reformist mayoral era of the 1950s through the 1980s. They are now among the most desirable living areas of Center City. This has slowed the city's 40-year population decline after it lost nearly one-quarter of its population.
Is there an answer to this question: How much of the population left after 1950?

Answer: one-quarter

Question: In Europe during the Medieval period, guilds were formed by craftsmen to organise their trades and written contracts have survived, particularly in relation to ecclesiastical buildings. The role of architect was usually one with that of master mason, or Magister lathomorum as they are sometimes described in contemporary documents.
Is there an answer to this question: What is another term for master mason?

Answer: Magister lathomorum

Question: Many factors played a role in Britain's long-term economic growth, such as the industrial revolution in the late 1700s and the prominent presence of child labour during the industrial age. Children who worked at an early age were often not forced; but did so because they needed to help their family survive financially. Due to poor employment opportunities for many parents, sending their children to work on farms and in factories was a way to help feed and support the family. Child Labour first started to occur in England when household businesses were turned into local labour markets that mass-produced the once homemade goods. Because children often helped produce the goods out of their homes, working in a factory to make those same goods was a simple change for many of these youths. Although there are many counts of children under the age of ten working for factories, the majority of children workers were between the ages of ten and fourteen. This age range was an important time for many youths as they were first helping to provide for their families; while also transitioning to save for their own future families.
Is there an answer to this question: What was the age of the majority of child workers in Britain?

Answer:
between the ages of ten and fourteen