In this task, you're expected to write answers to questions involving multiple references to the same entity. The answer to the question should be unambiguous and a phrase in the paragraph. Most questions can have only one correct answer.

Q: Passage: William Etty  (10 March 1787 – 13 November 1849) was an English artist best known for his history paintings containing nude figures. He was the first significant British painter of nudes and still lifes. Born in York, he left school at the age of 12 to become an apprentice printer in Hull. He completed his apprenticeship seven years later and moved to London, where in 1807 he joined the Royal Academy Schools. There he studied under Thomas Lawrence and trained by copying works by other artists. Etty earned respect at the Royal Academy of Arts for his ability to paint realistic flesh tones, but had little commercial or critical success in his first few years in London.
Etty's Cleopatra's Arrival in Cilicia, painted in 1821, featured numerous nudes and was exhibited to great acclaim. Its success prompted several further depictions of historical scenes with nudes. All but one of the works he exhibited at the Royal Academy in the 1820s contained at least one nude figure, and he acquired a reputation for indecency. Despite this, he was commercially successful and critically acclaimed, and in 1828 was elected a Royal Academician, at the time the highest honour available to an artist. Although he was one of the most respected artists in the country he continued to study at life classes throughout his life, a practice considered inappropriate by his fellow artists. In the 1830s Etty began to branch out into the more lucrative but less respected field of portraiture, and later became the first English painter to paint significant still lifes. He continued to paint both male and female nudes, which caused severe criticism and condemnation from some elements of the press.
An extremely shy man, Etty rarely socialised and never married. From 1824 until his death he lived with his niece Betsy (Elizabeth Etty). Even in London he retained a keen interest in his native York, and was instrumental in the establishment of the town's first art school and the campaign to preserve York city walls. While he never formally converted from his Methodist faith, he was deeply attached to the Roman Catholic Church and was one of the few non-Catholics to attend the 1838 opening of Augustus Pugin's chapel for St Mary's College, Oscott, at that time England's most important Roman Catholic building. 
Question: What church was the artist who was the first significant painter of nudes deeply attached to?

A: Roman Catholic Church.
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Q: Passage: Four lifelong friends from the Boston neighborhood of Charlestown, Douglas "Doug" MacRay, James "Jem" Coughlin, Albert "Gloansy" MacGloan, and Desmond "Dez" Elden, rob a bank. They take the manager, Claire Keesey, hostage, but release her unharmed. When they find out Claire lives in their neighborhood, Doug begins to follow her to find out how much she has told the police, and to make sure that Jem does not eliminate her as a witness. Soon a romance grows between them, which Doug hides from the gang. As they grow closer, Doug tells Claire of his search for his long-lost mother, who he believes went to live with his aunt in Tangerine, Florida. He also recounts his chance to be a professional hockey player which he threw away for a life of crime, following in his father's footsteps. She in turn tells Doug that she saw a tattoo on one of the robbers, and he realizes that she can identify Jem and send them all to prison. He knows that Jem will kill her if he discovers the truth, so he persuades her that the authorities cannot protect her, and she decides not to tell the police.
After Claire tells Doug about being harassed and her car vandalized by Alex, a local Dominican thug, Doug enlists Jem for a favor, which they can never talk about. Doug and Jem don hockey masks and violently assault the offenders without Jem knowing the true reason for the favor is to protect Claire. 
Question: What are the aliases of the people who take a hostage?

A: Doug.
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Q: Passage: The West Plains Trail had originated with Native Americans, and before the ox cart traffic it connected the fur-trading posts of the Columbia Fur Company.  In fact, that company introduced the Red River ox cart to haul its furs and goods. It also developed the trails, and by the early 1830s, an expedition from the Selkirk settlement driving a flock of sheep from Kentucky to the Assiniboine found the trail to be well-marked.From the Red River Settlement, the trail went south upstream along the Red River's west bank to Pembina, just across the international border. Pembina had been a fur-trading post since the last decade of the eighteenth century.  From there, some traffic continued south along the river, but most cart trains went west along the Pembina River to St. Joseph near the border and then south, or else cut the corner to the southwest in order to intercept the southbound trail from St. Joseph. This north-south trail paralleled the Red River about thirty miles (50 km) to the west.  By staying on the uplands west of the Red River, this route avoided crossing the tributaries of that river near their confluences with the Red, and also kept out of the swampy, flood-prone, and mosquito-ridden bottomlands in the lakebed of Glacial Lake Agassiz which the river drained.
In what is now southeastern North Dakota, the trail veered to the south-southeast to close with the Red River at Georgetown, Fort Abercrombie, and Breckenridge, Minnesota, all of which came into existence in consequence of the passing cart traffic.  From Breckenridge, the trail continued upstream along the east bank of the Red and Bois des Sioux Rivers to the continental divide at Lake Traverse. Some traffic went along the lakeshore through the Traverse Gap on the continental divide, then down either side of Big Stone Lake, source of the Minnesota River, while other carters took a short cut directly south from the Bois des Sioux across the open prairie through modern Graceville, Minnesota thereby avoiding the wet country in the Traverse Gap.The trail continued on intertwined routes down both sides of the valley of the Minnesota River past fur posts at Lac qui Parle and downstream locations, and the Upper Sioux and Lower Sioux Indian Agencies and Fort Ridgely, all established in the 1850s. From Fort Ridgely, the trail struck across the open prairie to the Minnesota River at Traverse des Sioux near modern-day St. Peter, Minnesota, where the furs and goods were, at first, usually transshipped to flatboats.  In later years, most cart trains crossed to the east bank and proceeded northeast along the wooded river bottoms and uplands to Fort Snelling or Mendota, where the Minnesota River joined the Mississippi.  From there furs were shipped down the Mississippi River to Saint Louis and other markets. 
Question: Before shipping goods down the Mississippi river. what river did most cart trains follow?

A:
Minnesota River.
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