Problem: Given the question: Determine the topic of the question-answer pair. Question: "when was the first super bowl?"; Answer: "For example, Super Bowl I was played on January 15, 1967, following the 1966 regular season , while Super Bowl XLVII was played on February 3, 2013, following the 2012 season ."? Topic:
++++++++++++++++++++++++++++++++
The answer is:
Super Bowl

Problem: Given the question: Determine the topic of the question-answer pair. Question: "what percent of illegal immigrants are from mexico and europe?"; Answer: "According to a 2005 Pew Hispanic Center report, 56% of undocumented immigrants were from Mexico ; 22% were from other Latin American countries; 13% were from Asia; 6% were from Europe and Canada; and 3% were from Africa and the rest of the world."? Topic:
++++++++++++++++++++++++++++++++
The answer is:
Illegal immigration to the United States

Problem: Given the question: Determine the topic of the question-answer pair. Question: "how long was richard nixon a president?"; Answer: "Richard Milhous Nixon (January 9, 1913 April 22, 1994) was the 37th President of the United States , serving from 1969 to 1974, when he became the only president to resign the office."? Topic:
++++++++++++++++++++++++++++++++
The answer is:
Richard Nixon