Write the procedure followed for the start and the restart of a match of hockey.

Start of the match: 1. The match is started by a pass-back (push or hit) from the centre of the field by a player of the team that wins the toss or is chosen to start. 2. All players, except the one taking the pass-back, must be in their own half of the field; opponents must be at least 5 m from the ball. 3. The ball must be played back (towards the player's own side) and not past the centre line in front. Restart: 1. The second half is restarted with a centre pass by the team that did not start the match, after the teams change ends. 2. After a goal is scored, play is restarted with a centre pass by the team that conceded the goal. 3. Players are in their own half and the opponents are at least 5 m away when the pass is taken.