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.

Q: Passage: The open waters are inhabited by fishes, molluscs and crustaceans living on sea grasses or who prey on each other. The shallowness of the lagoon makes it suitable habitat for diving birds such as anhinga, cormorants and diving ducks. The bay also provides habitat for juvenile sea animals that have left the shelter of the mangrove belts. Manatees frequent the quiet waters of the bay. The bay has a year-round population of double-crested cormorants. Winter residents include northern gannets, American white pelicans and common loons. The bay also has a resident population of common bottlenose dolphins.Biscayne Bay is a shallow lagoon with little vertical density or salinity gradient due to its lack of depth. Instead of a vertical gradient, the bay shows a horizontal density gradient, with fresh water entering from the drainage canals on the west side and seawater entering through gaps in the keys and through the safety valve section of shoals. Bay salinity reaches a peak in June. Changes in the salinity pattern of the bay have had negative effects on formerly abundant species such as red drum. Biscayne Bay and Florida Bay are major nurseries for red grouper and gray snapper. The bottom of the lagoon hosts sponges and soft corals in places where grasses cannot not grow. Three primary species of seagrass are found in the park: turtlegrass, shoal grass and manatee grass. The endangered Johnson's seagrass is also found in small quantities in the bay, which is at the southern end of the grass's range. Roughly 75 percent of the central bay floor is covered by grasses. Scarring of seagrass beds by vessel groundings or propellers is a significant problem. About 200 such incidents are documented each year, with full re-growth requiring up to 15 years. The bay is also affected by commercial shrimp trawling, which is permitted in park waters. The passage of roller-frame trawl nets does not harm grasses, but damages soft corals and sponges.

A: What is the name of the entity that provides habitat for juvenile sea animals that have left the shelter of the mangrove belts?
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Q: Passage: In 1917, France is embroiled in World War I. Dubois, head of the French spy bureau, offers to spare the life of a captured agent (an uncredited Mischa Auer) if he will reveal who he is protecting. Dubois suspects it is Mata Hari, a celebrated exotic dancer, but the prisoner chooses execution by firing squad.
Lieutenant Alexis Rosanoff of the Imperial Russian Air Force lands in Paris after a dangerous flight over enemy territory, bringing important dispatches from Russia. He persuades his superior, General Serge Shubin, to take him to see Mata Hari perform that night. Rosanoff is instantly smitten by her (as are most of the men of Paris). By youthful exuberance and good looks, he persuades her to spend the night with him. However, the next morning, she makes it clear to him that it was a one-time dalliance.
Carlotta secretly instructs Mata Hari to report to Andriani, their spymaster. Andriani orders her to find out from General Shubin the contents of the dispatches Rosanoff brought.
Meanwhile, when Dubois discloses his suspicions about Mata Hari to Shubin, the general laughs them off as ridiculous. However, Shubin has himself passed secret information to his lover Mata Hari, whom he is expecting for a private dinner. Rosanoff arrives unexpectedly, in case Shubin has further instructions before the pilot returns to Russia with more important dispatches. Upon learning of Rosanoff's mission, Mata Hari arranges for a confederate to steal the dispatches, photograph them and then return them undetected, while she keeps a puzzled, but delighted Rosanoff occupied.

A: Who does not believe the exotic dancer could be a spy?
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Q: Passage: The historical evidence suggests that Lochner's paintings were well known and widely copied during his lifetime, and remained so until the 16th century. Early examples in ink after his Virgin in Adoration are in the British Museum and Ecole nationale superieure des Beaux-Arts. The influence of Lochner's Last Judgement can be seen in Hans Memling's Gdansk altarpiece, where the gates of Heaven are similar, as is the rendering of the blessed. Albrecht Durer knew of him before his stay in Cologne, and Van der Weyden saw his paintings during his travel to Italy. The latter's Altar of Saint John is similar to Lochner's Flaying of Bartholomew, especially in the executioner's pose, while his Saint Columba altarpiece includes two motifs from Lochner's Adoration of the Magi triptych; specifically, the king in the central panel with his back to the viewer, and the girl in the right hand wing holding a basket containing doves.The Heisterbach Altarpiece, a dismantled double set of wings now broken apart and divided between Bamberg and Cologne, is heavily indebted to Lochner's style. The inner panels show sixteen scenes from the lives of Christ and the Virgin that bear multiple similarities to Lochner's work, including in format, compositional motifs, physiognomy and colourisation. The work was for a period attributed to Lochner but is now generally accepted as bearing his strong influence. In 1954 Alfred Stange described the Master of the Heisterbach Altarpiece as Lochner's "best-known and most important pupil and follower", although research in 2014 indicates that the two may have collaborated on the panels.Research in 2014 by Iris Schaeffer into the underdrawings of the Dombild Altarpiece established two guiding hands, presumably Lochner and an exceptionally talented pupil, whom she concludes was in probability the principal artist behind the Heisterbach Altarpiece. A counter view is that Lochner's workshop was producing to a deadline, and he delegated as a matter of expediency.

A:
What was the name of the person that Albrecht Durer knew of before his stay in Cologne?
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