In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.

Article: A new report says the number of foreign students at colleges and universities in the United States increased by three percent last year. This has been the first obvious increase since 2001. American schools last fall had 583,000 foreign students. The record is 586,000. That was set in 2002 after many years of gains. But after that the numbers fell. The terrorist attacks on September 11th, 2001 led to more visa requirements. Now stronger efforts are being made to get more foreign students to study in the United States. China remained in second place in front of South Korea but behind India, whichsent almost 84,000 students last fall. The number of Japanese fell sharply by nine percent, although it remained in fourth place. There were three percent drops from Indonesia and Kenya, the only African country in the top twenty last year. But there were obvious increases from Saudi Arabia, Nepal and Vietnam. The number of Saudi students more than doubled, rising to nearly eight thousand. For a sixth year, the University of Southern California in Los Angeles had the most foreign students. Columbia University in New York was second. Other schools in the top five were New York University, the University of Illinois and Purdue University. Unlike American students in other countries, who often choose history and language study, the leading area of study in the USA was business and management. Second was engineering. The new report also says more than 220,000 Americans studied in other countries. That was during the 2005-2006 school year. It was a record number, and an increase of eight and a half percent from the year before. But only five percent of them stayed for a full year.
Answer: it was harder for foreign students to get permission to study in the USA
After 2002, the number of foreign students in the USA fell mainly because _ .

Article: Students at the Yale School of Architecture handed over the keys to a house that they designed and built to its new owners at a ceremony on Sept. 25 at 20 King Place. The ceremony held to hand over the house will mark the completion of the school's First-Year Building Project 2008. since 1967, the Yale School of Architecture has offered its first-year graduate students the opportunity to design and build a structure as a part of their education. Unique among architecture schools, this program is compulsory for all members of the class, and students frequently refer to it as their reason for applying to Yale. This year's class of 64 worked to design, develop and document an idea for a 2,100-square-foot, wheelchair-accessible, two-family house. Students had to use sustainable resources and energy-efficient technology. The budget for the project is always less than actual construction costs, and the builders-in-training had to seek supplementary donations, mostly in the form of construction materials. The result this year was a "designer" home, dressed entirely in cedar , fitted inside with Swedish-designed cabinetry and partially powered by solar energy. The floors are bamboo, another natural material prized for being quickly replenished . This year, the student-builders used a pre-cast foundation system, which, in addition to its other labor-saving virtues, uses 75% less concrete than the poured system. The first-year class of 2008 raised $100,000-worth of donated materials. But when it came to constructing the inside steps of the house, they used old drafting tables from the School of Architecture that would otherwise have been thrown out. Ground was broken in May for the house at King Place, and the whole class worked on site until the construction was finished.
Answer: to increase their interest in architecture
The students at the Yale School of Architecture designed and built the house _ .

Article: In the south there were large cotton farms called plantations. Growing cotton was very hard work, so saves were brought from Africa to work in the fields. The white slave owners did not let the slaves have drums because they knew that Africans could use drums to send messages. They were afraid the slaves would help each other to run away. Most slave owners did not let the slaves keep their African dances or their religions. All the slaves had to become Christian. They sang white religious songs but they added African rhythms to the music. We call these songs "spirituals". Some spirituals told about the hard life of the slaves or their wish to run away. Although the slaves could not do African dances, in church, they clapped their hands and moved their whole bodies. Today black religious music is called gospel music In Louisiana and the city of New Orleans the slave owners were French. They let the slaves and the free blacks play drums and horns, they also let them keep their African dances. Black musicians in New Orleans put European musical instruments and songs together with African rhythms. They made a new musical sound that was later called jazz. Many of the first jazz instruments were home made. Black people also made rhythm with their hands, feet, and bodies. Later black brass bands , in the French style, became common. These bands played at special times like weddings and funerals. You can still hear early form of jazz in the city of New Orleans. The slaves were set free in 1865, ahead the Civil War between the North and the South. Since that time black gospel music and jazz have become an important part of the popular music in America.
Answer: they believed slaves had no right to play it
The white slave owners did not let the slaves have drums because_.