Problem: Solar energy:

Solar technologies are broadly characterized as either passive or active depending on the way they capture, convert and distribute sunlight and enable solar energy to be harnessed at different levels around the world, mostly depending on distance from the equator. Although solar energy refers primarily to the use of solar radiation for practical ends, all renewable energies, other than geothermal and tidal, derive their energy from the Sun in a direct or indirect way.

Where do the majority of renewable energies derive their energy from?
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A: the Sun

Problem: According to the writer of Luke, Mary was a relative of Elizabeth, wife of the priest Zechariah of the priestly division of Abijah, who was herself part of the lineage of Aaron and so of the tribe of Levi.[Luke 1:5;1:36] Some of those who consider that the relationship with Elizabeth was on the maternal side, consider that Mary, like Joseph, to whom she was betrothed, was of the House of David and so of the Tribe of Judah, and that the genealogy of Jesus presented in Luke 3 from Nathan, third son of David and Bathsheba, is in fact the genealogy of Mary,[need quotation to verify] while the genealogy from Solomon given in Matthew 1 is that of Joseph. (Aaron's wife Elisheba was of the tribe of Judah, so all their descendants are from both Levi and Judah.)[Num.1:7 & Ex.6:23]
What tribe did Luke belong to?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Bowers confronted a similar problem in his edition of Maggie. Crane originally printed the novel privately in 1893. To secure commercial publication in 1896, Crane agreed to remove profanity, but he also made stylistic revisions. Bowers's approach was to preserve the stylistic and literary changes of 1896, but to revert to the 1893 readings where he believed that Crane was fulfilling the publisher's intention rather than his own. There were, however, intermediate cases that could reasonably have been attributed to either intention, and some of Bowers's choices came under fire both as to his judgment, and as to the wisdom of conflating readings from the two different versions of Maggie.
When was the fifth and final version of Maggie published?
A: unanswerable

Context and question: KU football dates from 1890, and has played in the Orange Bowl three times: 1948, 1968, and 2008. They are currently coached by David Beaty, who was hired in 2014. In 2008, under the leadership of Mark Mangino, the #7 Jayhawks emerged victorious in their first BCS bowl game, the FedEx Orange Bowl, with a 2421 victory over the #3 Virginia Tech Hokies. This capstone victory marked the end of the most successful season in school history, in which the Jayhawks went 121 (.923). The team plays at Memorial Stadium, which recently underwent a $31 million renovation to add the Anderson Family Football Complex, adding a football practice facility adjacent to the stadium complete with indoor partial practice field, weight room, and new locker room.
Who did KU defeat in the 2008 Orange Bowl?
Answer: Virginia Tech Hokies

Question: After returning to the United States, Kerry joined the Vietnam Veterans Against the War (VVAW). Then numbering about 20,000, VVAW was considered by some (including the administration of President Richard Nixon) to be an effective, if controversial, component of the antiwar movement. Kerry participated in the "Winter Soldier Investigation" conducted by VVAW of U.S. atrocities in Vietnam, and he appears in a film by that name that documents the investigation. According to Nixon Secretary of Defense Melvin Laird, "I didn't approve of what he did, but I understood the protesters quite well", and he declined two requests from the Navy to court martial Reserve Lieutenant Kerry over his antiwar activity.
Is there an answer to this question: What did Laird refuse to court-martial Kerry for?

Answer: his antiwar activity

QUES: Northwestern was elected to the Association of American Universities in 1917 and remains a research university with "very high" research activity. Northwestern's schools of management, engineering, and communication are among the most academically productive in the nation. Northwestern received $550 million in research funding in 2014. Northwestern supports nearly 1,500 research laboratories across two campuses, predominately in the medical and biological sciences. Through the Innovation and New Ventures Office (INVO), Northwestern researchers disclosed 247 inventions, filed 270 patents applications, received 81 foreign and US patents, started 12 companies, and generated $79.8 million in licensing revenue in 2013. The bulk of revenue has come from a patent on pregabalin, a synthesized organic molecule discovered by chemistry professor Richard Silverman, which ultimately was marketed as Lyrica, a drug sold by Pfizer, to combat epilepsy, neuropathic pain, and fibromyalgia. INVO has been involved in creating a number of centers, including the Center for Developmental Therapeutics (CDT) and the Center for Device Development (CD2). It has also helped form over 50 Northwestern startup companies based on Northwestern technologies.

How many companies were started through Northwestern's Innovations and New Ventures Office?
What is the answer?
ANS:
12