messages.role: user
messages.content: In soccer, is it possible to play a header pass after launching the ball into the air on your own, so that the goalkeeper of the same team catches the ball?
messages.role: assistant
messages.content: In soccer, a header pass refers to a player using their head to direct the ball. According to the Laws of the Game, as maintained by the International Football Association Board (IFAB), a header pass is not allowed if it is performed by a player who has just played the ball. This rule is in place to prevent players from gaining an unfair advantage by using their head to redirect the ball immediately after playing it.
  
  
  Therefore, if a player launches the ball into the air with their foot and then attempts to play it with their head, it would be considered a foul. The goalkeeper of the same team would not be allowed to catch the ball in this situation. The referee would likely award a free kick to the opposing team for this infraction.
messages.role: user
messages.content: You mean is it foul?
messages.role: assistant
messages.content: Yes, it is considered a foul. In soccer, the rules are very clear about what constitutes a legal and illegal play. When a player uses their head to redirect the ball after having played it with their foot, it is deemed as a foul. This is because the player is attempting to gain an unfair advantage by using a different part of the body to control the ball. The referee would stop play and award a free kick to the opposing team from the spot of the foul. The goalkeeper would not be allowed to catch the ball in this situation.
messages.role: user
messages.content: How do they judge whether this is intentional or not?