Based on the information present in the given passage, you need to write a correct answer to the given question. A correct answer is one that correctly and completely answers the question. Do not write answers that address the question partially or incorrectly. The correct answer must be contained in the given paragraph.

Q: Paragraph- Sent 1: Adrienne Saunders is happily married to her art dealer husband , Jack .
Sent 2: They have a daughter named Mary .
Sent 3: Adrienne hears from a friend that she thought she saw Jack in town when he claimed to be on an out of town business trip .
Sent 4: Adrienne confronts him , but he denies being in town , and their lives continue .
Sent 5: Soon after a museum curator is mysteriously murdered , and a relic that Jack bought for the museum is revealed to be a fake .
Sent 6: Jack is placed under suspicion , and then Adrienne receives word from the police that Jack perished in a car accident .
Sent 7: In trying to wrap up Jack 's affairs , Adrienne begins to suspect that her husband had switched identities with a high school classmate , Frank Sullivan .
Sent 8: When she sees a high school yearbook picture of her husband attributed to Sullivan , she is convinced .
Sent 9: She tracks down a relative of Saunders , who confirms that Frank and Jack were inseparable in high school .
Sent 10: After Jack died , the relative never saw Frank again .
Sent 11: She explained that Frank 's father was an alcoholic and that his mother worked as a toll booth operator .
Sent 12: She directs Adrienne to Frank 's mother , who lives in a rundown apartment in Brooklyn .
Sent 13: Frank 's mother bitterly receives the news that she has a granddaughter , telling Adrienne that Frank was always selfish and that he never looked in on her .
Sent 14: A stalker lurks at Adrienne 's loft .
Sent 15: He comes in to Adrienne 's bed while she is asleep and caresses her .
Sent 16: He watches Mary , who is spooked by the man in her room at night . 
Question: When Jack dies, why does Frank's relative never see Frank again?.

A: Because it turns out that Frank and Jack had switched identities, so it was really Frank who had died.
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Q: Paragraph- Sent 1: Patricia Cross and her boyfriend Larry Osborne , two students in a San Francisco school , become expelled for the publication of an off-campus underground paper .
Sent 2: As a result , a philosophy professor , Dr. Jonathon Barnett , resigns his teaching position and decides to become an advocate for the counterculture youth movement and , specifically , the use of LSD .
Sent 3: The hippies of the Haight-Ashbury district first see him as a hero and then as something even more .
Sent 4: Dr. Barnett even makes an appearance on the Joe Pyne TV show to voice his support of the hippie community and the use of LSD .
Sent 5: One scheming young man sees the opportunity to build Dr. Barnett as the head of a cult centered around the use of LSD .
Sent 6: He hopes to earn profit from the users , Dr. Barnett's speeches known as `` happenings , '' and their lifestyles .
Sent 7: At a massive LSD-fueled dance , Patricia begins to have a bad trip Which leads to an argument between her and Pat , ultimately splitting the couple up .
Sent 8: After Patricia realizes that she's pregnant , Dr. Barnett advises her to have an abortion , ultimately leading to Patricia attempting suicide .
Sent 9: However , Larry saves her and makes the destruction of Dr. Barnett's cult his primary objective .
Sent 10: Larry shoots Dr. Barnett from the crowd at one of his massive speeches .
Sent 11: As another hippie in attendance calms the audience and Elliot sees his new leader for their cult-like organization , Larry realizes that his assassination of Dr. Barnett simply made him a martyr for the hippie movement . 
Question: Why was Dr. Barnett seen as the head of a cult centered around the use of LSD?.

A: Opportunity to earn profit from users Dr. Barnett's speaches.
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Q: Paragraph- Sent 1: As for engravings, Durer's work was restricted to portraits and illustrations for his treatise.
Sent 2: The portraits include Cardinal-Elector Albert of Mainz; Frederick the Wise, elector of Saxony; the humanist scholar Willibald Pirckheimer; Philipp Melanchthon, and Erasmus of Rotterdam.
Sent 3: For those of the Cardinal, Melanchthon, and Durer's final major work, a drawn portrait of the Nuremberg patrician Ulrich Starck, Durer depicted the sitters in profile, perhaps reflecting a more mathematical approach.
Sent 4: Despite complaining of his lack of a formal classical education, Durer was greatly interested in intellectual matters and learned much from his boyhood friend Willibald Pirckheimer, whom he no doubt consulted on the content of many of his images.
Sent 5: He also derived great satisfaction from his friendships and correspondence with Erasmus and other scholars.
Sent 6: Durer succeeded in producing two books during his lifetime.
Sent 7: "The Four Books on Measurement" were published at Nuremberg in 1525 and was the first book for adults on mathematics in German, as well as being cited later by Galileo and Kepler.
Sent 8: The other, a work on city fortifications, was published in 1527.
Sent 9: "The Four Books on Human Proportion" were published posthumously, shortly after his death in 1528. 
Question: What might one be surprised about Durer's approach to his drawings?.

A:
He had a mathematical approach.
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