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.

Passage: The St. Johns River (Spanish: Río 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.
What state remained an undeveloped frontier into the 20th century?

Passage: Albrecht the Elder was 62 or 63  when his panel was painted early in 1490. Barbara's portrait may have been completed soon after, when she would have been around 39. Their son was around 18 and had just completed his apprenticeship with Michael Wolgemut, and would soon leave for Nuremberg to travel as a journeyman painter. The father panel was painted first; for aesthetic reasons Dürer may have waited a year or two until his mother looked older.The sitters are presented in three-quarter view before flat, nondescript lacquer-like green backgrounds, which although lushly coloured, are thinly layered. Each has a white ground and light red imprimatura with lead content. The sitter's form and pose echo and in many ways counterbalance each other. Brand Philip draws attention to the similarities of the panels' linear construction, especially the manner in which the folds and lines of their clothing form triangular shapes. The train of Barbara's headdress across her chest corresponds with the opening of Albrecht's fur-lined coat. It was more usual in pendant portraits of this type for the male to be on the left-hand side; the positioning here may be an indication that Dürer originally intended his father's panel to stand alone, given that Barbara's was painted some time later.Albrecht the Elder's panel is regarded as the superior of the two works. This may in part be attributed to differing contemporary treatments of male and female portraits; men were allowed more individuality, while female portraits were bound by stereotypes and were not as daring, for example showing evidence of ageing. In either case, the father painting is far more closely detailed, especially in the lining of clothing, which is summary in Barbara's panel, compared to the long seam of her husband's gown. This contrast in detail can also be seen in the treatment of the rosaries, which are given prominence and a glowing red colour in his panel, but are small and relegated in hers.Albrecht the Elder's panel is usually, but not always, thought to be the first of the two to be executed and, if so, is the earliest extant example of his son's painting. In contrast, a number of art historians have noted that his mother's portrait contains bland passages, especially around the eyes and may be a near-contemporary copy of a lost original. Lotte Brand Philip believes the clumsiness in the mother panel indicated that Dürer painted it first, as a youthful attempt at portraiture, and that Albrecht the Elder might have later "commissioned" his own portrait to pair with Barbara's. Recent technical examination of the two panels confirms that Barbara's portrait was painted later than her husband's.
What is the name of the person that completed his apprenticeship with Michael Wolgemut?

Passage: In February 1997, Wallace traveled to California to promote Life After Death and record a music video for its lead single, "Hypnotize". On March 5, 1997, he gave a radio interview with The Dog House on KYLD in San Francisco. In the interview, he stated that he had hired a security detail, since he feared for his safety; this was because he was a celebrity figure in general, not because he was a rapper.On March 8, 1997, Wallace presented an award to Toni Braxton at the 11th Annual Soul Train Music Awards in Los Angeles and was booed by some of the audience. After the ceremony, he attended an afterparty hosted by Vibe and Qwest Records at the Petersen Automotive Museum in Los Angeles. Guests included Evans, Aaliyah, Combs, and members of the Crips and Bloods gangs.On March 9, 1997, at 12:30 a.m. (PST), after the fire department closed the party early due to overcrowding, Wallace left with his entourage in two GMC Suburbans to return to his hotel. He traveled in the front passenger seat alongside his associates, Damion "D-Roc" Butler, Lil' Cease and driver Gregory "G-Money" Young. Combs traveled in the other vehicle with three bodyguards. The two trucks were trailed by a Chevrolet Blazer carrying Bad Boy's director of security, Paul Offord.By 12:45 a.m. (PST), the streets were crowded with people leaving the party. Wallace's truck stopped at a red light 50 yards (46 m) from the museum. A black Chevy Impala pulled up alongside Wallace's truck. The driver of the Impala, an African-American male dressed in a blue suit and bow tie, rolled down his window, drew a 9 mm blue-steel pistol and fired at the GMC Suburban. Four bullets hit Wallace. His entourage rushed him to Cedars-Sinai Medical Center, but he was pronounced dead at 1:15 a.m. (PST).Wallace's funeral was held on March 18, 1997, at the Frank E. Campbell Funeral Chapel in Manhattan. There were among 350 mourners at the funeral, including Queen Latifah, Flava Flav, Mary J. Blige, Lil' Kim, Lil' Cease, Run–D.M.C., DJ Kool Herc, Treach from Naughty by Nature, Busta Rhymes, Salt-N-Pepa, DJ Spinderella, Foxy Brown, Sister Souljah and others. After the funeral, his body was cremated and the ashes were given to his family.

What is the last name of the person who was booed by some of the audience at the 11th Annual Soul Train Music Awards in Los Angeles?