instruction:
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.
question:
Passage: Tchaikovsky played the finale of his Second Symphony, subtitled the Little Russian, at a gathering at Rimsky-Korsakov's house in Saint Petersburg on January 7, 1873, before the official premiere of the entire work. To his brother Modest, he wrote, "[T]he whole company almost tore me to pieces with rapture—and Madame Rimskaya-Korsakova begged me in tears to let her arrange it for piano duet". Rimskaya-Korsakova was a noted pianist, composer and arranger in her own right, transcribing works by other members of the kuchka as well as those of her husband and Tchaikovsky's Romeo and Juliet. Borodin was present and may have approved of the work himself. Also present was Vladimir Stasov. Impressed by what he had heard, Stasov asked Tchaikovsky what he would consider writing next, and would soon influence the composer in writing the symphonic poem The Tempest.What endeared the Little Russian to the kuchka was not simply that Tchaikovsky had used Ukrainian folk songs as melodic material. It was how, especially in the outer movements, he allowed the unique characteristics of Russian folk song to dictate symphonic form. This was a goal toward which the kuchka strived, both collectively and individually. Tchaikovsky, with his Conservatory grounding, could sustain such development longer and more cohesively than his colleagues in the kuchka. (Though the comparison may seem unfair, Tchaikovsky authority David Brown has pointed out that, because of their similar time-frames, the finale of the Little Russian shows what Mussorgsky could have done with "The Great Gate of Kiev" from Pictures at an Exhibition had he possessed academic training comparable to that of Tchaikovsky.).
answer:
What is the name of the person who wrote to his brother stating, "the whole company almost tore me to pieces with rapture"?


question:
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.
answer:
What is the name of the entity that provides habitat for juvenile sea animals that have left the shelter of the mangrove belts?


question:
Passage: The mosaics of Delos are a significant body of ancient Greek mosaic art. Most of the surviving mosaics from Delos, Greece, an island in the Cyclades, date to the last half of the 2nd century BC and early 1st century BC, during the Hellenistic period and beginning of the Roman period of Greece. Hellenistic mosaics were no longer produced after roughly 69 BC, due to warfare with the Kingdom of Pontus and subsequently abrupt decline of the island's population and position as a major trading center. Among Hellenistic Greek archaeological sites, Delos contains one of the highest concentrations of surviving mosaic artworks. Approximately half of all surviving tessellated Greek mosaics from the Hellenistic period come from Delos.
The paved walkways of Delos range from simple pebble or chip-pavement constructions to elaborate mosaic floors composed of tesserae. Most motifs contain simple geometric patterns, while only a handful utilize the opus tessellatum and opus vermiculatum techniques to create lucid, naturalistic, and richly colored scenes and figures. Mosaics have been found in places of worship, public buildings, and private homes, the latter usually containing either an irregular-shaped floor plan or peristyle central courtyard.
answer:
What country has one of the highest concentrations of surviving mosaic art?