The problem: Answer a question about this article:
There is usually an indication for a specific identification of an infectious agent only when such identification can aid in the treatment or prevention of the disease, or to advance knowledge of the course of an illness prior to the development of effective therapeutic or preventative measures. For example, in the early 1980s, prior to the appearance of AZT for the treatment of AIDS, the course of the disease was closely followed by monitoring the composition of patient blood samples, even though the outcome would not offer the patient any further treatment options. In part, these studies on the appearance of HIV in specific communities permitted the advancement of hypotheses as to the route of transmission of the virus. By understanding how the disease was transmitted, resources could be targeted to the communities at greatest risk in campaigns aimed at reducing the number of new infections. The specific serological diagnostic identification, and later genotypic or molecular identification, of HIV also enabled the development of hypotheses as to the temporal and geographical origins of the virus, as well as a myriad of other hypothesis. The development of molecular diagnostic tools have enabled physicians and researchers to monitor the efficacy of treatment with anti-retroviral drugs. Molecular diagnostics are now commonly used to identify HIV in healthy people long before the onset of illness and have been used to demonstrate the existence of people who are genetically resistant to HIV infection. Thus, while there still is no cure for AIDS, there is great therapeutic and predictive benefit to identifying the virus and monitoring the virus levels within the blood of infected individuals, both for the patient and for the community at large.
What is used in the treatment of AIDS?
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The answer: AZT

Problem: Please answer a question about the following article about Bird migration:
Nocturnal migrants minimize predation, avoid overheating, and can feed during the day. One cost of nocturnal migration is the loss of sleep. Migrants may be able to alter their quality of sleep to compensate for the loss.
How do nocturnal migrants compensate for loss of sleep?
A: Migrants may be able to alter their quality of sleep

Question: Read this and answer the question

With the exception of seasons one and two, the contestants in the semifinals onwards perform in front of a studio audience. They perform with a full band in the finals. From season four to season nine, the American Idol band was led by Rickey Minor; from season ten onwards, Ray Chew. Assistance may also be given by vocal coaches and song arrangers, such as Michael Orland and Debra Byrd to contestants behind the scene. Starting with season seven, contestants may perform with a musical instrument from the Hollywood rounds onwards. In the first nine seasons, performances were usually aired live on Tuesday nights, followed by the results shows on Wednesdays in the United States and Canada, but moved to Wednesdays and Thursdays in season ten.

Who led the American Idol band after Rickey Minor's departure?
Answer: Ray Chew

Problem: Cockroaches are among the fastest insect runners and, at full speed, adopt a bipedal run to reach a high velocity in proportion to their body size. As cockroaches move very quickly, they need to be video recorded at several hundred frames per second to reveal their gait. More sedate locomotion is seen in the stick insects or walking sticks (Phasmatodea). A few insects have evolved to walk on the surface of the water, especially members of the Gerridae family, commonly known as water striders. A few species of ocean-skaters in the genus Halobates even live on the surface of open oceans, a habitat that has few insect species.
Some insects can walk on top of what?
The answer is the following: water

However, asymmetry of causation can be observed in a non-arbitrary way which is not metaphysical in the case of a human hand dropping a cup of water which smashes into fragments on a hard floor, spilling the liquid. In this order, the causes of the resultant pattern of cup fragments and water spill is easily attributable in terms of the trajectory of the cup, irregularities in its structure, angle of its impact on the floor, etc. However, applying the same event in reverse, it is difficult to explain why the various pieces of the cup should fly up into the human hand and reassemble precisely into the shape of a cup, or why the water should position itself entirely within the cup. The causes of the resultant structure and shape of the cup and the encapsulation of the water by the hand within the cup are not easily attributable, as neither hand nor floor can achieve such formations of the cup or water. This asymmetry is perceivable on account of two features: i) the relationship between the agent capacities of the human hand (i.e., what it is and is not capable of and what it is for) and non-animal agency (i.e., what floors are and are not capable of and what they are for) and ii) that the pieces of cup came to possess exactly the nature and number of those of a cup before assembling. In short, such asymmetry is attributable to the relationship between temporal direction on the one hand and the implications of form and functional capacity on the other.
How can asymmetry of causation be observed?
in a non-arbitrary way

Here is a question about this article: North of central Hyderabad lie Hussain Sagar, Tank Bund Road, Rani Gunj and the Secunderabad Railway Station. Most of the city's parks and recreational centres, such as Sanjeevaiah Park, Indira Park, Lumbini Park, NTR Gardens, the Buddha statue and Tankbund Park are located here. In the northwest part of the city there are upscale residential and commercial areas such as Banjara Hills, Jubilee Hills, Begumpet, Khairatabad and Miyapur. The northern end contains industrial areas such as Sanathnagar, Moosapet, Balanagar, Patancheru and Chanda Nagar. The northeast end is dotted with residential areas. In the eastern part of the city lie many defence research centres and Ramoji Film City. The "Cyberabad" area in the southwest and west of the city has grown rapidly since the 1990s. It is home to information technology and bio-pharmaceutical companies and to landmarks such as Hyderabad Airport, Osman Sagar, Himayath Sagar and Kasu Brahmananda Reddy National Park.
What is the answer to this question: Where in Hyderabad is the Secunderabad Railway Station?
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So...
North of central Hyderabad