[Q]: What is the answer for the question: What was the name of the piece that Etty considered to be his best work? from the following article ?  Possibly because of its size, The Sirens and Ulysses failed to sell at the 1837 Summer Exhibition. In October 1837 wealthy Manchester cotton merchant Daniel Grant, an admirer of Etty who had already commissioned Venus and her Doves from him, met Etty at Heaton Park races and offered to buy The Sirens and Ulysses and Etty's smaller Samson Betrayed by Delilah unseen for a total of £200. Etty was hoping for £400 for the two paintings, but on being told by Grant that his firm had lost £100,000 that year offered a price of £300 for the pair. Grant counter-offered £250 (about £22,000 in today's terms), which Etty refused. On leaving at the end of the evening, Grant suddenly said, "Will you take the money?", startling Etty, who in his surprise agreed. Grant died shortly afterwards, leaving the painting to his brother William, who in turn gave it to the Royal Manchester Institution in 1839.Etty considered the painting to be his best work, insisting that it form the centrepiece of his 1849 Royal Society of Arts solo exhibition. The Royal Manchester Institution was concerned that the painting would be damaged if moved, refusing to allow it to be used in the exhibition until Etty, and a number of influential friends, visited Manchester to beg them to release it. Etty died later that year, and his work enjoyed a brief boom in popularity. Interest in him declined over time, and by the end of the 19th century the cost of all his paintings had fallen below their original prices. As it was rarely exhibited, The Sirens and Ulysses had little influence on later artists, although it is credited as an influence on Frederic Leighton's 1858 The Fisherman and the Syren. Ulysses and the Sirens is one of those great efforts of my Art achieved in the vigour of my life, I can never make again.
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[A]: The Sirens and Ulysses

input: Please answer the following: What is the answer for the question: What has been valuable for understanding social hierarchy and stratification in the earliest European societies? from the following article ?  Neanderthal remains dating to around 150,000 years ago, or the Middle Paleolithic, are some of the earliest traces of human activity in the lands of modern Bulgaria. The Karanovo culture arose circa 6,500 BC and was one of several Neolithic societies in the region that thrived on agriculture. The Copper Age Varna culture (fifth millennium BC) is credited with inventing gold metallurgy. The associated Varna Necropolis treasure contains the oldest golden jewellery in the world with an approximate age of over 6,000 years. The treasure has been valuable for understanding social hierarchy and stratification in the earliest European societies.The Thracians, one of the three primary ancestral groups of modern Bulgarians, appeared on the Balkan Peninsula some time before the 12th century BC. The Thracians excelled in metallurgy and gave the Greeks the Orphean and Dionysian cults, but remained tribal and stateless. The Persian Achaemenid Empire conquered most of present-day Bulgaria in the 6th century BC and retained control over the region until 479 BC. The invasion became a catalyst for Thracian unity, and the bulk of their tribes united under king Teres to form the Odrysian kingdom in the 470s BC. It was weakened and vassalized by Philip II of Macedon in 341 BC, attacked by Celts in the 3rd century, and finally became a province of the Roman Empire in AD 45.By the end of the 1st century AD, Roman governance was established over the entire Balkan Peninsula and Christianity began spreading in the region around the 4th century. The Gothic Bible—the first Germanic language book—was created by Gothic bishop Ulfilas in what is today northern Bulgaria around 381. The region came under Byzantine control after the fall of Rome in 476. The Byzantines were engaged in prolonged warfare against Persia and could not defend their Balkan territories from barbarian incursions. This enabled the Slavs to enter the Balkan Peninsula as marauders, primarily through an area between the Danube River and the Balkan Mountains known as...
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output: Varna Necropolis treasure

Problem: What is the answer for the question: What band's members testified before Congress? from the following article ?  The band members grew uncomfortable with their success, with much of the burden of Pearl Jam's popularity falling on frontman Vedder. While Pearl Jam received four awards at the 1993 MTV Video Music Awards for its video for "Jeremy", including Video of the Year and Best Group Video, the band refused to make a video for "Black" in spite of pressure from the label. This action began a trend of the band refusing to make videos for its songs. Vedder felt that the concept of music videos robbed listeners from creating their own interpretations of the song, stating that "Before music videos first came out, you'd listen to a song with headphones on, sitting in a beanbag chair with your eyes closed, and you'd come up with your own visions, these things that came from within. Then all of a sudden, sometimes even the very first time you heard a song, it was with these visual images attached, and it robbed you of any form of self-expression." The United States Department of Justice was investigating the company's practices at the time and asked the band to create a memorandum of its experiences with the company. Band members Gossard and Ament testified at a subcommittee investigation on June 30, 1994 in Washington, D.C. Pearl Jam alleged that Ticketmaster used anti-competitive and monopolistic practices to gouge fans. After Pearl Jam's testimony before Congress, Congressman Dingell (D-Mich.) wrote a bill requiring full disclosure to prevent Ticketmaster from burying escalating service fees. Pearl Jam's manager said he was gratified that Congress recognized the problem as a national issue.

A:
Pearl Jam