(CNN) -- English club Chelsea have completed the signing of Oriol Romeu from Spanish and European champions Barcelona. The 19-year-old is currently playing for Spain at the World Under-20 Championships in Colombia and has signed a four-year deal with last season's Premier League runners-up. The deal is worth $7 million and includes a buy back clause, set at $14 million after the first year and $21 million after the second. Romeu started his career at Barcelona's city rivals Espanyol before joining the Camp Nou academy in 2004. The midfielder, who can also play in central defence, made his debut for Barcelona in last season's Spanish Supercup match with Seville and got his first taste of league action against Deportivo in May 2010. He has played 90 minutes in both of Spain's games at the World Under-20 Championships, when they beat Costa Rica and Ecuador. Chelsea official web site confirmed the signing and said Romeu is "renowned for his strength and his expansive passing ability." Another player leaving Barcelona is Jeffren Suarez after he agreed to join Sporting Lisbon. The Portuguese outfit have paid $5 million for the 23-year-old which, like the Romeu deal, includes a buy back option. Jeffren joined Barca from Tenerife in 2004 and made his debut for the Catalan club in the 2006-07 season.
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QUESTION: Who made his debut in 2010?

The Dutch Take Over: Intent on capturing a piece of the Portuguese trade in pepper and other spices, the Java-based Dutch Ailied with the Malays in 1633 to blockade Melaka. The trade blockade was to last eight years, and ended in a seven-month siege. The Portuguese surrendered in 1641, wracked by malaria and dysentery and denied their usual reinforcements from Goa. By then, the city had become a stagnant backwater. Unlike the Portuguese, the Dutch decided to do business with the Malays of Johor, who controlled the southern half of the peninsula together with Singapore and the neighboring Riau islands. A trade treaty gave the Dutch command of the spice trade but reserved Johor's rights in tin exports from Perak, Selangor, and Klang. Without ever retrieving the supremacy of the old Melaka sultanate, Johor had become the strongest Asian power in the region. For the Dutch, Johor provided a buffer against other Europeans. Meanwhile, fresh blood came in with the migration into the southern interior of hardy Minangkabau farmers from Sumatra, while tough Bugis warriors from the east Indonesian Celebes (Sulawesi) roved the length and breadth of the peninsula. The Minangkabau custom of freely electing their leaders provided the model for rulership elections in modern federal Malaysia. Their confederation of States became today's Negeri Sembilan ("Nine States"), with Seremban as its capital. The name Minangkabau itself means roughly "buffalo horns" and is reflected in the distinctive upward curving roof in museums and government offices built in the traditional Minangkabau style. The Bugis were energetic merchants and great sailors. With the Dutch concentrating once more on Java and the Moluccas in the 18th century, the Bugis took advantage of the vacuum by raiding Perak and Kedah, imposing their chieftains in Selangor and becoming the power behind the throne in Johor. The Bugis in Johor's administration provided much of the spirit in that State's independent stand in the 19th and 20th centuries. Throughout this period, the east coast states enjoyed a relatively tranquil prosperity, Terengganu notably thriving from its textile industry and trading in pepper and gold with the Thais, Cambodians, and Chinese. The British, under the private auspices of the East India Company (EIC), were beginning to poke their noses into North Borneo.
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QUESTION: During what centuries did Terengganu thrive from its textile industry and trading in pepper and gold?

The inhabited history of the Las Vegas Valley stretches to 23,000 b.c. , when much of the area was covered by a prehistoric lake. During this period, the indigenous people lived in caves, hunting the mammals that gathered at the shoreline. The landscape of the valley changed dramatically over the next 200 centuries. The glaciers feeding the lake melted away and the lake evaporated. Fossils tell an obscure story of man's slow and sporadic development. Around 3000 b.c. , native Archaic Indians began to develop a lasting hunting and gathering culture. By this time, the valley was in much the same geographic state as it exists in today, with one exceptionthe presence of artesian springs that bubbled to the surface in several areas. These springs fed a network of streams draining through the Las Vegas Wash to the Colorado River. The areas surrounding the springs were desert oases: sprawling collections of grasses, trees, and wildlife. Many springs lay in areas that would eventually become the center of the modern Las Vegas metropolis. For about 4000 years, the Archaics thrived in a culture that included many signs of early civilization. Signs of even more advancement appeared halfway through the first millennium a.d. , when the Anasazi Indians inhabited the valley. Far more progressive than the Archaics, the Anasazi utilized such formal agricultural techniques as irrigation to assist their harvest. This permitted the Anasazi to achieve a benchmark of advanced societythe ability to live in permanent shelters year-round without need to follow wildlife. Mysteriously, the Anasazi vanished from the valley around a.d.
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QUESTION: Approximately what year was the Las Vegas Valley covered by a prehistoric lake?

When he was at Oxford he had been well known for concealing under a slightly rowdy exterior the highest spirits of any of the undergraduates. He was looked upon as the most fascinating of _farceurs_. It seems that he had distinguished himself there less for writing Greek verse, though he was good at it, than for the wonderful variety of fireworks that he persistently used to let off under the dean's window. It was this fancy of his that led, first, to his popularity, and afterwards to the unfortunate episode of his being sent down; soon after which he had married privately, chiefly in order to send his parents an announcement of his wedding in _The Morning Post_, as a surprise. Some people had come in after dinner--for there was going to be a little _sauterie intime_, as Mrs Mitchell called it, speaking in an accent of her own, so appalling that, as Vincy observed, it made it sound quite improper. Edith watched, intensely amused, as she saw that there were really one or two people present who, never having seen Mitchell before, naturally did not recognise him now, so that the disguise was considered a triumph. There was something truly agreeable in the deference he was showing to a peculiarly yellow lady in red, adorned with ugly real lace, and beautiful false hair. She was obviously delighted with the Russian prince.
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QUESTION:
From which institution was the individual in Sentence 4 "sent down"?