instruction:
This task involves creating questions from a given passage that involve some kind of complex reasoning (including numerical reasoning). 
The generated questions must require looking at more than one part of the passage to answer. Try to use a variety of reasoning types in your questions (some of the sample reasoning types are illustrated in the 'positive examples' field) and also have a variety of answer types (spans, numbers, dates). A span is a continuous phrase taken directly from the passage or question. In such questions, the answer spans are recommended to be five words. Questions with answer type "number", are expected to start with "How many". For instance, "How long did an event last?" can be phrased as "How many years did an event last?". To increase diversity, try to create more questions for which the answer will be multiple spans. Please create questions that require AT LEAST 2 arithmetic operations as illustrated in the 'positive examples' field. You are encouraged to try DIFFERENT COMBINATIONS of operations and not just limit to the combinations shown in those examples. The more challenging questions you create, the better it is.
question:
Passage: The Lines of Communication were English Civil War fortifications commissioned by Parliament  and built around London between 1642 and 1643 to protect the capital from attack by the Royalist armies of Charles I. In 1642 some basic fortifications were built, in the form of street barricades and small earthworks. In 1643 a major construction effort was made, to provide a comprehensive ring of fortifications around the city. Much of the work was done by volunteer labour, organized by the trained bands and the livery companies. Up to 20,000 people are thought to be involved, and the works were completed in under two months. The fortifications failed their only test when the New Model Army entered London in 1647, and they were levelled by Parliament the same year.
answer:
How many months did it take them to build The Lines of Communication?


question:
Passage: Data from the 2000 census indicates the median income for a household in the city is $41,809, and the median income for a family is $49,570. Males have a median income of $35,296 versus $27,418 for females. The per capita income for the city is $20,943. 10.0% of the population and 6.9% of families are below the poverty line. Out of the total population, 13.7% of those under the age of 18 and 5.8% of those 65 and older are living below the poverty line.
answer:
How many dollars higher is the median income of men and women combined over the median income of a family?


question:
Passage: Taylor won the inaugural 2014 Perth Darts Masters after beating Van Gerwen in the final 11-9 whilst averaging 105.08. He then defended his 2014 Sydney Darts Masters title by beating Stephen Bunting 11-3 in the final. In the quarter-finals of the 2014 World Grand Prix (darts), Taylor lost 3-1 against James Wade. This was the first time that Wade had beaten Taylor in a major televised knockout tournament. At the 2014 European Championship (darts), Taylor lost 10-9 in a thriller to Stephen Bunting. Taylor comfortably progressed to the final of the 2014 Grand Slam of Darts and a meeting with Dave Chisnall. Despite taking an initial 5-0 lead, the final was by far his closest match of the event as Chisnall fought back to 10-10, before Taylor rediscovered his best form to win another five unanswered legs and seal his sixth Grand Slam title 16-13.
answer:

How many fewer points did Bunting have against Taylor versus how many Van Gerwen had against Taylor?