Article: Proteins are structural materials in much of the animal body (e.g. muscles, skin, and hair). They also form the enzymes that control chemical reactions throughout the body. Each protein molecule is composed of amino acids, which are characterized by inclusion of nitrogen and sometimes sulphur (these components are responsible for the distinctive smell of burning protein, such as the keratin in hair). The body requires amino acids to produce new proteins (protein retention) and to replace damaged proteins (maintenance). As there is no protein or amino acid storage provision, amino acids must be present in the diet. Excess amino acids are discarded, typically in the urine. For all animals, some amino acids are essential (an animal cannot produce them internally) and some are non-essential (the animal can produce them from other nitrogen-containing compounds). About twenty amino acids are found in the human body, and about ten of these are essential and, therefore, must be included in the diet. A diet that contains adequate amounts of amino acids (especially those that are essential) is particularly important in some situations: during early development and maturation, pregnancy, lactation, or injury (a burn, for instance). A complete protein source contains all the essential amino acids; an incomplete protein source lacks one or more of the essential amino acids.

Question: When the body no longer needs the amino acids that are present, through which excretion are they lost?
Ans: urine

Here is a question about this article: In late 2006[update], Dell lost its lead in the PC-business to Hewlett-Packard. Both Gartner and IDC estimated that in the third quarter of 2006, HP shipped more units worldwide than Dell did. Dell's 3.6% growth paled in comparison to HP's 15% growth during the same period. The problem got worse in the fourth quarter, when Gartner estimated that Dell PC shipments declined 8.9% (versus HP's 23.9% growth). As a result, at the end of 2006 Dell's overall PC market-share stood at 13.9% (versus HP's 17.4%).
What is the answer to this question: What year did Dell lose its tech lead to Hewlett-Packard?
****
So... 2006

The problem: Answer a question about this article:
According to the U.S. Census Bureau, in 2004, Miami had the third highest incidence of family incomes below the federal poverty line in the United States, making it the third poorest city in the USA, behind only Detroit, Michigan (ranked #1) and El Paso, Texas (ranked #2). Miami is also one of the very few cities where its local government went bankrupt, in 2001. However, since that time, Miami has experienced a revival: in 2008, Miami was ranked as "America's Cleanest City" according to Forbes for its year-round good air quality, vast green spaces, clean drinking water, clean streets and city-wide recycling programs. In a 2009 UBS study of 73 world cities, Miami was ranked as the richest city in the United States (of four U.S. cities included in the survey) and the world's fifth-richest city, in terms of purchasing power.
In what year did Miami's government declare bankruptcy?
****
The answer: 2001

Problem: Please answer a question about the following article about 2008 Sichuan earthquake:
On May 16 China stated it had also received $457 million in donated money and goods for rescue efforts so far, including $83 million from 19 countries and four international organizations. Saudi Arabia was the largest aid donor to China, providing close to 40,000,000 in financial assistance, and an additional 8,000,000 worth of relief materials.
How much financial assistance did Saudi Arabia give China?
A: 40,000,000

Question: Read this and answer the question

Tito was notable for pursuing a foreign policy of neutrality during the Cold War and for establishing close ties with developing countries. Tito's strong belief in self-determination caused early rift with Stalin and consequently, the Eastern Bloc. His public speeches often reiterated that policy of neutrality and cooperation with all countries would be natural as long as these countries did not use their influence to pressure Yugoslavia to take sides. Relations with the United States and Western European nations were generally cordial.

With whom did Tito's belief in self-determination cause a rift?
Answer: Stalin

Historians estimate that between the advent of Islam in 650CE and the abolition of slavery in the Arabian Peninsula in the mid-20th century, 10 to 18 million sub-Saharan Black Africans were enslaved by Arab slave traders and transported to the Arabian Peninsula and neighboring countries. This number far exceeded the number of slaves who were taken to the Americas. Several factors affected the visibility of descendants of this diaspora in 21st-century Arab societies: The traders shipped more female slaves than males, as there was a demand for them to serve as concubines in harems in the Arabian Peninsula and neighboring countries. Male slaves were castrated in order to serve as harem guards. The death toll of Black African slaves from forced labor was high. The mixed-race children of female slaves and Arab owners were assimilated into the Arab owners' families under the patrilineal kinship system. As a result, few distinctive Afro-Arab black communities have survived in the Arabian Peninsula and neighboring countries.
Why were women slaves more popular?
for them to serve as concubines