input question: Answer this question: what are the characteristics of an ethnic group????
output answer: Ethnicity or ethnic group is a socially defined category based on common culture or nationality .

Answer this question: what cars have smart key systems?
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Answer: It was first developed by Siemens in the mid-1990s and introduced by Mercedes-Benz under the name "Keyless Go" in 1998 on the W220 S-Class following its design patent filed by Daimler-Benz on May 17, 1997.

Q: Answer this question: when was srv born?
A: Stephen "Stevie" Ray Vaughan (October 3, 1954 August 27, 1990) was an American guitarist, singer-songwriter, and record producer.

Question: Answer this question: what is the sign for degrees?
Answer: The symbol consists of a small raised circle, historically a zero glyph .

[Q]: Answer this question: what kind of books does debbie macomber writes?
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[A]: Debbie Macomber (born October 22, 1948 in Yakima, Washington ) is a best-selling American author of over 150 romance novels and contemporary women's fiction.

Problem: Given the question: Answer this question: what is the controlled substance act known as?
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The answer is:
The Controlled Substances Act (CSA) was enacted into law by the Congress of the United States as Title II of the Comprehensive Drug Abuse Prevention and Control Act of 1970 .