In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.

Q: The Secretary of the Treasury pays a taxable pension to the president. Former presidents receive a pension equal to the pay that the head of an executive department (Executive Level I) would be paid, as of 2017 $207,800 per year. The pension begins immediately after a president's departure from office. A former president's spouse may also be paid a lifetime annual pension of $20,000 if they relinquish any other statutory pension.

A: pension of the president of the united states
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Q: An example of concurrent validity is a comparison of the scores of the CLEP College Algebra exam with course grades in college algebra to determine the degree to which scores on the CLEP are related to performance in a college algebra class. An example of predictive validity is a comparison of scores on the SAT with first semester grade point average (GPA) in college; this assesses the degree to which SAT scores are predictive of college performance.

A: what is an example of criterion related validity
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Q: DNA was first isolated by Friedrich Miescher in 1869. Its molecular structure was first identified by James Watson and Francis Crick at the Cavendish Laboratory within the University of Cambridge in 1953, whose model-building efforts were guided by X-ray diffraction data acquired by Raymond Gosling, who was a post-graduate student of Rosalind Franklin. DNA is used by researchers as a molecular tool to explore physical laws and theories, such as the ergodic theorem and the theory of elasticity. The unique material properties of DNA have made it an attractive molecule for material scientists and engineers interested in micro-and nano-fabrication. Among notable advances in this field are DNA origami and DNA-based hybrid materials.

A:
when was dna first discovered and by whom
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