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.

[EX Q]: Passage: In 1929, the Columbia Broadcasting System began making regular radio news broadcasts—five-minute summaries taken from reports from the United Press, one of the three wire services that supplied newspapers with national and international news. In December 1930 CBS chief William S. Paley hired journalist Paul W. White away from United Press as CBS's news editor. Paley put the radio network's news operation at the same level as entertainment, and authorized White to interrupt programming if events warranted. Along with other networks, CBS chafed at the breaking news embargo imposed upon radio by the wire services, which prevented them from using bulletins until they first appeared in print. CBS disregarded an embargo when it broke the story of the Lindbergh kidnapping in 1932, using live on-the-air reporting. Radio networks scooped print outlets with news of the 1932 presidential election.:485-486 In March 1933, White was named vice president and general manager in charge of news at CBS. As the first head of CBS News, he began to build an organization that soon established a legendary reputation.:486 In 1935, White hired Edward R. Murrow, and sent him to London in 1937 to run CBS Radio's European operation.:486 White led a staff that would come to include Charles Collingwood, William L. Shirer, Eric Sevareid, Bill Downs, John Charles Daly, Joseph C. Harsch:501 Cecil Brown, Elmer Davis, Quincy Howe, H. V. Kaltenborn, Robert Trout, and Lewis Shollenberger. "CBS was getting its ducks in a row for the biggest news story in history, World War II", wrote radio historian John Dunning.:487.
[EX A]: After CBS started making regular radio news broadcasts, how many years passed before their first live on the air reporting?

[EX Q]: Passage: Still trying to acquire their first win of the season, the Bengals flew to Reliant Stadium for a Week 8 duel with the Houston Texans.  In the first quarter, Cincinnati's struggles continued as Texans WR Jacoby Jones returned a punt 73 yards for a touchdown.  The Bengals responded with kicker Shayne Graham getting a 43-yard field goal.  In the second quarter, Houston increased its lead as QB Matt Schaub completed a 6-yard TD pass to WR David Anderson.  Cincinnati closed out the half with Graham nailing a 32-yard field goal. In the third quarter, the Texans began to pull away as Schaub completed a 7-yard and a 39-yard TD pass to WR Kevin Walter.  In the fourth quarter, Houston sealed the win with RB Steve Slaton getting a 20-yard TD run. With yet another loss, the Bengals would fall to 0-8 and start a season with such a record for the first time since 1994.
[EX A]: How many losses did the Bengals start this game with?

[EX Q]: Passage: Relationship between concentrations and effects  Drowsiness, dissociative, and psychosis-like effects (e.g., hallucinations, delirium) are reported in patients treated with ketamine starting at circulating concentrations of around 50 to 200 ng/mL (210-841 nM), while analgesia begins at levels of approximately 100 to 200 ng/mL (421-841 nM). The typical intravenous antidepressant dosage of ketamine used to treat depression is low and results in maximal plasma concentrations of 70 to 200 ng/mL (294-841 nM). Circulating concentrations of around 2,000 to 3,000 ng/mL (8,413-12,620 nM) are employed during anesthesia, and patients may start to awaken once levels of ketamine have decreased to about 500 to 1,000 ng/mL (2,103-4,207 nM). There is wide variation in the peak concentrations of ketamine that have been reported in association with anesthesia in the literature, with values ranging from 2,211-3,447 ng/mL (9,300-14,500 nM) to as high as 22,370 ng/mL (94,100 nM). Biological activity concentrations of ketamine are lower than total plasma levels due to plasma protein binding, although plasma protein binding is relatively low with ketamine (approximately 12 to 47% protein-bound). Concentrations of ketamine in the brain have been reported to be several-fold higher than in plasma.
[EX A]:
How many concentration levels have a range of no more than 200 ng/ml?