Penalty corner
Provide three instances where a penalty corner might be awarded.
Field hockey
The short or penalty corner is awarded:   for an offence by a defender in the circle which does not prevent the probable scoring of a goal  for an intentional offence in the circle by a defender against an opponent who does not have possession of the ball or an opportunity to play the ball  for an intentional offence by a defender outside the circle but within the 23-metre area they are defending  for intentionally playing the ball over the back-line by a defender  when the ball becomes lodged in a player's clothing or equipment while in the circle they are defending Short corners begin with five defenders (usually including the keeper) positioned behind the back line and at least 5 m from the 'insert' position of the ball. All other players in the defending team must be beyond the centre line, that is not in their 'own' half of the pitch, until the ball is in play. Attacking players begin the play standing outside the scoring circle, except for one attacker who starts the corner by playing the ball from a mark 10 m either side of the goal (the circle has a 14.63 m radius). This player puts the ball into play by pushing or hitting the ball to the other attackers outside the circle; the ball must pass outside the circle and then put back into the circle before the attackers may make a shot at the goal from which a goal can be scored. FIH rules do not forbid a shot at goal before the ball leaves the circle after being 'inserted', nor is a shot at the goal from outside the circle prohibited, but a goal cannot be scored at all if the ball has not gone out of the circle and cannot be scored from a shot from outside the circle if it is not again played by an attacking player before it enters the goal. For safety reasons, the first shot of a penalty corner must not exceed 460 mm high (the height of the "backboard" of the goal) at the point it crosses the goal line if it is hit. However, if the ball is deemed to be below backboard height, the ball can be subsequently deflected above this height by another player (defender or attacker), providing that this deflection does not lead to danger. Note that the "Slap" stroke (a sweeping motion towards the ball, where the stick is kept on or close to the ground when striking the ball) is classed as a hit, and so the first shot at goal must be below backboard height for this type of shot also. If the first shot at goal in a short corner situation is a push, flick or scoop, in particular the "drag flick" (which has become popular at international and national league standards), the shot is permitted to rise above the height of the backboard, as long as the shot is not deemed dangerous to any opponent. This form of shooting was developed because it is not height restricted in the same way as the first hit shot at the goal and players with good technique are able to drag-flick with as much power as many others can hit a ball.