In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
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Question: Passage: The St. Johns River (Spanish: Rio San Juan) is the longest river in the U.S. state of Florida and its most significant one for commercial and recreational use. At 310 miles (500 km) long, it flows north and winds through or borders twelve counties. The drop in elevation from headwaters to mouth is less than 30 feet (9 m); like most Florida waterways, the St. Johns has a very low flow rate 0.3 mph (0.13 m/s) and is often described as "lazy". Numerous lakes are formed by the river or flow into it, but as a river its widest point is nearly 3 miles (5 km) across. The narrowest point is in the headwaters, an unnavigable marsh in Indian River County. The St. Johns drainage basin of 8,840 square miles (22,900 km2) includes some of Florida's major wetlands. It is separated into three major basins and two associated watersheds for Lake George and the Ocklawaha River, all managed by the St. Johns River Water Management District.
A variety of people have lived on or near the St. Johns, including Paleo-indians, Archaic people, Timucua, Mocama, French and Spanish settlers, Seminoles, slaves and freemen, Florida crackers, land developers, tourists and retirees. It has been the subject of William Bartram's journals, Marjorie Kinnan Rawlings' books, and Harriet Beecher Stowe's letters home. Although Florida was the location of the first permanent European settlement in what would become the United States, it was the last U.S. territory on the east coast to be developed; it remained an undeveloped frontier into the 20th century. When attention was turned to the state, however, much of the land was rapidly overdeveloped in a national zeal for progress. The St. Johns, like many Florida rivers, was altered to make way for agricultural and residential centers. It suffered severe pollution and human interference that has diminished the natural order of life in and around the river. In all, 3.5 million people live within the various watersheds that feed into the St. Johns River. The St. Johns, named one of 14 American Heritage Rivers in 1998, was number 6 on a list of America's Ten Most Endangered Rivers in 2008. Restoration efforts are under way for the basins around the St. Johns as Florida continues to deal with population increases in the river's vicinity.

Answer: What state remained an undeveloped frontier into the 20th century?

Question: Passage: Amy Winslow is an art student majoring in painting, who is all by her own. Her mother died when she was a child and her father is not around. As a student she has financial problems, so she is surprised when the couple Joan and Stuart Quinn (Connie Sellecca and David Dukes) decide to take her in their house for a small amount of rent. Little does Amy know that Joan is following her every step through secret cameras, and that she has a hidden agenda for her. Initially, Amy is very content living with the Quinns, believing that she has found the family she has never had. When she loses the university's financial aide through an administration error, Joan immediately steps in to take care of her. They both drink a large amount of wine, and then Joan announces that because she is infertile, they are looking for a surrogate mother. She then tells Amy that they feel that she is the perfect candidate. Amy is flattered, and next day discusses the situation with her friendly teacher Eric Shaw. She then agrees when the Quinns propose to pay for her college fees if she helps them out.
When Amy is a few months pregnant, Joan starts to show strange behavior. Amy feels smothered by Joan's overbearing attitude, feeling that she is being treated like a ten-year-old child. Her oil painting being taken away, Amy looks for it in the basement, only to find old baby clothes. Joan catches her, and becomes furious, scaring Amy away. She later tries to explain the situation by saying that she was pregnant four years ago, though had a miscarriage. Amy does not believe her story, though Eric - who was already 'warned' by Joan that Amy might act paranoid - tells her to focus on her painting, not on the Quinns.

Answer: Why does Amy agree to be a surrogate mother?

Question: Passage: In turn-of-the-century Oakland, California, the teenaged Myrtle McKinley is expected to follow high school by attending a San Francisco business college. Instead, she takes a job performing with a traveling vaudeville troupe, where she meets and falls in love with singer-dancer Frank Burt.
Frank proposes they marry and also entertain on stage together as an act, which proves very popular. Myrtle retires from show business after giving birth to daughters Iris and Mikie, while her husband goes on tour with another partner.
A few years later, less successful now, Frank persuades his wife to return to the stage. The girls are cared for by their grandmother as their parents leave town for months at a time.
Iris and Mikie are school girls when they are given a trip to Boston to see their parents. Iris meets a well-to-do young man, Bob Clarkman, and is permitted to attend an exclusive boarding school there. She is embarrassed by her parents' profession, however, and mortified at what the reaction will be from Bob and all of her new school friends when they learn that her parents are performing nearby.
Myrtle and Frank take matters into their own hands, arranging with the school to have all of the students attend a show. To her great relief, Iris is delighted when her classmates adore her parents' sophisticated act. By the time she's out of school and ready to marry, Iris wants to go into show business herself.

Answer:
What is the last name of the person who falls in love with Frank?