The problem: Answer a question about this article:
In some species, both parents care for nestlings and fledglings; in others, such care is the responsibility of only one sex. In some species, other members of the same speciesusually close relatives of the breeding pair, such as offspring from previous broodswill help with the raising of the young. Such alloparenting is particularly common among the Corvida, which includes such birds as the true crows, Australian magpie and fairy-wrens, but has been observed in species as different as the rifleman and red kite. Among most groups of animals, male parental care is rare. In birds, however, it is quite commonmore so than in any other vertebrate class. Though territory and nest site defence, incubation, and chick feeding are often shared tasks, there is sometimes a division of labour in which one mate undertakes all or most of a particular duty.
Alloparenting is particulary common with what species?
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The answer: Corvida

Problem: Please answer a question about the following article about Brigham Young University:
Scientists associated with BYU have created some notable inventions. Philo T. Farnsworth, inventor of the electronic television, received his education at BYU, and later returned to do fusion research, receiving an honorary degree from the university. Harvey Fletcher, also an alumnus of BYU, inventor of stereophonic sound, went on to carry out the now famous oil-drop experiment with Robert Millikan, and was later Founding Dean of the BYU College of Engineering. H. Tracy Hall, inventor of the man-made diamond, left General Electric in 1955 and became a full professor of chemistry and Director of Research at BYU. While there, he invented a new type of diamond press, the tetrahedral press. In student achievements, BYU Ad Lab teams won both the 2007 and 2008 L'Oreal National Brandstorm Competition, and students developed the Magnetic Lasso algorithm found in Adobe Photoshop. In prestigious scholarships, BYU has produced 10 Rhodes Scholars, four Gates Scholars in the last six years, and in the last decade has claimed 41 Fulbright scholars and 3 Jack Kent Cooke scholars.
What did former student Tracy Hall invent as a BYU professor of chemistry and Director of Research?
A: a new type of diamond press, the tetrahedral press

Question: Read this and answer the question

Back in Warsaw that year, Chopin heard Niccolo Paganini play the violin, and composed a set of variations, Souvenir de Paganini. It may have been this experience which encouraged him to commence writing his first Etudes, (182932), exploring the capacities of his own instrument. On 11 August, three weeks after completing his studies at the Warsaw Conservatory, he made his debut in Vienna. He gave two piano concerts and received many favourable reviewsin addition to some commenting (in Chopin's own words) that he was "too delicate for those accustomed to the piano-bashing of local artists". In one of these concerts, he premiered his Variations on La ci darem la mano, Op. 2 (variations on an aria from Mozart's opera Don Giovanni) for piano and orchestra. He returned to Warsaw in September 1829, where he premiered his Piano Concerto No. 2 in F minor, Op. 21 on 17 March 1830.

When did Chopin return to Warsaw?
Answer: September 1829

Problem: In 19961997, a research study was conducted on a large population of middle age students in the Cherry Creek School District in Denver, Colorado, USA. The study showed that students who actively listen to classical music before studying had higher academic scores. The research further indicated that students who listened to the music prior to an examination also had positively elevated achievement scores. Students who listened to rock-and-roll or country had moderately lower scores. The study further indicated that students who used classical during the course of study had a significant leap in their academic performance; whereas, those who listened to other types of music had significantly lowered academic scores. The research was conducted over several schools within the Cherry Creek School District and was conducted through University of Colorado. This study is reflective of several recent studies (i.e. Mike Manthei and Steve N. Kelly of the University of Nebraska at Omaha; Donald A. Hodges and Debra S. O'Connell of the University of North Carolina at Greensboro; etc.) and others who had significant results through the discourse of their work.
Who experience a significant leap in their academic performance?
The answer is the following: students who used classical during the course of study

The North Korean contributions to the Chinese Communist victory were not forgotten after the creation of the People's Republic of China in 1949. As a token of gratitude, between 50,000 and 70,000 Korean veterans that served in the PLA were sent back along with their weapons, and they later played a significant role in the initial invasion of South Korea. China promised to support the North Koreans in the event of a war against South Korea. The Chinese support created a deep division between the Korean Communists, and Kim Il-sung's authority within the Communist party was challenged by the Chinese faction led by Pak Il-yu, who was later purged by Kim.
What country helped North Korea invade South Korea?
China

Here is a question about this article: The assumption of the use of a two-beamed cross does not determine the number of nails used in the crucifixion and some theories suggest three nails while others suggest four nails. However, throughout history larger numbers of nails have been hypothesized, at times as high as 14 nails. These variations are also present in the artistic depictions of the crucifixion. In the Western Church, before the Renaissance usually four nails would be depicted, with the feet side by side. After the Renaissance most depictions use three nails, with one foot placed on the other. Nails are almost always depicted in art, although Romans sometimes just tied the victims to the cross. The tradition also carries to Christian emblems, e.g. the Jesuits use three nails under the IHS monogram and a cross to symbolize the crucifixion.
What is the answer to this question: How many nails were suggested they used for the crucifixion?
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So...
three nails