Determine the topic of the question-answer pair. Question: "who replaced nikita khrushchev?"; Answer: "Khrushchev's party colleagues removed him from power in 1964, replacing him with Leonid Brezhnev as First Secretary and Alexei Kosygin as Premier."? Topic:
Ans: Nikita Khrushchev

Determine the topic of the question-answer pair. Question: "how does a cat purr?"; Answer: "However, using a strict definition of purring that continuous sound production must alternate between pulmonic egressive and ingressive airstream (and usually go on for minutes), Peters (2002), in an exhaustive review of the scientific literature, reached the conclusion that until then only 'purring cats' (Felidae) and two species of genets , Genetta tigrina, and most likely also Genetta genetta, had been documented to purr."? Topic:
Ans: Purr

Determine the topic of the question-answer pair. Question: "WHERE WAS JOHN WAYNE BORN?"; Answer: "Wayne was born in Winterset, Iowa but his family relocated to the greater Los Angeles area when he was four years old."? Topic:
Ans: John Wayne

Determine the topic of the question-answer pair. Question: "what cards do you need in poker to get a royal flush?"; Answer: "These hand rankings are also used in some other card games , and in poker dice ."? Topic:
Ans: List of poker hands