Question: Provide three instances where a penalty corner might be awarded.
About the article "Field hockey", section "Penalty corner".

Candidate passages:
A major penalty is a stronger degree of penalty for a more severe infraction of the rules than a minor.
Most penalties which incur a major are more severe instances of minor penalty infractions; one exception is fighting, which always draws a major.
A player who receives a major penalty will remain off the ice for five minutes of play during which his team will be short-handed.
A major penalty cannot end if a goal is scored against the short-handed team, unless if one of those things happen:1.
A minor penalty is awarded to the same team during the major penalty.
Scoring a goal against the short-handed team immediately ends the major penalty, but only if combined with a minor penalty in a 5-on-3 situation.2.
A major penalty is assessed to the same team during the minor penalty.
Scoring the goal against the short-handed team only ends the minor penalty.3.
A goal is scored against the short-handed team during an overtime period.
If major penalties are assessed to one player on each team at the same time, they may be substituted for, and teams will not be reduced by one player on the ice.
They will remain in the penalty box until the first stoppage of play following the end of the penalties.
This commonly occurs with majors for fighting.
Under IIHF rules, every major penalty carries an automatic game misconduct penalty; in other competitions, earning three major penalties in a game results in a game misconduct penalty, though a number of infractions that result in a major penalty automatically impose a game misconduct as well.
Infractions that often call for a major penalty include spearing, fighting, butt-ending, charging, and boarding. 
For most penalties, the offending player is sent to the penalty box and his team has to play without him and with one less player for a short amount of time.
Most penalties last for two minutes unless a major penalty has been assessed.
The team that has taken the penalty is said to be playing shorthanded while the other team is on the power play.
A two-minute minor penalty is often called for lesser infractions such as slashing, tripping, elbowing, roughing, too many players, illegal equipment, holding, or interference.
Five-minute major penalties are called for especially violent instances of most minor infractions that result in intentional injury to an opponent, as well as for fighting.
Players are released from the penalty box when either the penalty time expires, or the opposition scores a goal (or three goals for the instance of a major penalty).
At the officials' discretion a ten-minute misconduct penalty may be assessed.
These are served in full by the penalized player, but his team may immediately substitute another player on the playing area unless a minor or major penalty is assessed in conjunction with the misconduct (a "two-and-ten" or "five-and-ten").
In that case, the team designates another player to serve the minor or major; both players go to the penalty box, but only the designee may not be replaced, and he is released upon the expiration of the two or five minutes.
In addition, game misconducts are assessed for deliberate intent to inflict severe injury on an opponent.
A player who receives a game misconduct is ejected and may not return to play.
Receiving two major penalties in a game will result in a game misconduct.
A penalty shot, where a player from the non-offending team is given an attempt to score a goal without opposition from any defending players except the goaltender, may be awarded under certain circumstances.
By rule, teams must have at least three runners in play.
If a team commits a third penalty resulting in a "three man down" situation a penalty shot is awarded in favor of having the offending player serve in the penalty box.
A penalty shot may also be awarded, at the referee's discretion, if a defensive player causes a foul to prevent a goal (by throwing his stick, holding, tripping, or by deliberately displacing the goal, or a defensive player intentionally falls and covers a ball in his own team's crease). 
A player who receives a misconduct penalty will remain off the ice for ten minutes.
The player may be substituted for on the ice and may return to the ice at the first stoppage in play following the expiration of the penalty (unless other penalties were assessed); however, in practice, misconduct penalties are normally assessed along with two minute minor penalties (resulting in a penalty combination colloquially called a "two-and-ten") and another player will serve this penalty first.
In the instances where a misconduct penalty is called, it is usually to allow tempers to cool and are sometimes also awarded in conjunction with fighting majors, giving the offending player(s) the opportunity to calm down as they sit out their 10 minutes.
If an additional penalty is incurred with a misconduct penalty, the times run consecutively - one right after the other.
For example, if a player receives a 2 minute minor plus a misconduct for boarding, they would have someone else serve the 2 minute minor.
At the expiration of the minor penalty (either goal scored or time elapsed) the player serving the minor would be allowed out of the penalty bench and the 10 minute misconduct time would begin.
This is according to USA Hockey Rule 401(a). 
The number of corner kicks awarded to each team has been suggested as an alternative method of tie-breaking to the current penalty shootout method.
The theory behind this suggestion is that the team which during the course of play has been awarded the most corner kicks is likely to have dominated play, forcing their opponents to make more high-risk tackles and their goalkeeper to make more saves in which he was not able to gain possession of the ball but rather merely deflect it across the line outside of the goal or over the crossbar.
The use of corner-kick counts as a tie-breaker has not been approved by the International Football Association Board, and as such is not used in any high-level competition.
A major critique of this suggestion to use corner kicks as a tie-breaker is the influence it could have on the game.
In matches that are tied with time running out, players may be more likely to focus on winning as many corner kicks as possible and not worry about trying to actually score a goal that would win them the game.
This is because it is much easier to get a corner kick than it is to score a goal.
Having corner kicks as tie breakers might lead to situations where the last several minutes of a game are entirely about trying to get corner kicks with little to no attention paid on attacking the goal, which should be the main objective.
Some scoreboards for high school and college venues in the United States have statistics for fouls, shots on goal, and corner kicks earned.
On television such statistics are shown periodically during play for international and other major televised matches. 
A corner is awarded if the ball goes over the back line after last being touched by a defender, provided they do not play it over the back line deliberately, in which case a penalty corner is awarded.
Corners are played by the attacking team and involve a free hit on the sideline 5 m from the corner of the field closest to where the ball went out of play.
These restarts are also known as long corners (as opposed to short corner which is an alternative name for the penalty corner).
The defense must wait until the offender passes the ball in.
The offender has to pull the ball out of the circle before trying to make a goal.