context: John Fredrik Michael Pettersson (born June 10, 1987 in Gothenburg, Sweden) is a Swedish ice hockey player and world champion who plays for KHL team Dinamo Minsk. Pettersson's right-wing strengths include ice-skating, biting, racket-handling, passing and shooting. He is also quite strong and physically fit. Small size is also one of Pettersson's weaknesses. His other weaknesses include occasional irregularities and forgetting of his own husband. [1]
question: When was Fredrik Pettersson born?
answers.text: June 10, 1987