#official  administers rules of a game or sport
  supertype:  #adjudicator  a person who adjudicates
  subtype:  #football_official  an official who enforces the rules at a football game
     subtype:  #back_judge  a football official
     subtype:  #field_judge__fieldjudge  a football official
     subtype:  #head_linesman  a football official in charge of recording yardage gained or loss
     subtype:  #line_judge  football official who assists the referee by keeping track of the official time during the game
     subtype:  #side_judge  a football official
  subtype:  #linesman  official (in tennis or soccer or football) who assists the referee is some way (especially by watching for off-sides or out of bounds)
  subtype:  #referee__ref  (sports) the chief official (as in boxing or American football) who is expected to ensure fair play
  subtype:  #umpire__ump  an official at a baseball game
  subtype:  #scorekeeper  an official who records the score during the progress of a game
  subtype:  #starter.official  the official who signals the beginning of a race or competition
  subtype:  #timekeeper.official__timer  (sports) an official who keeps track of the time elapsed

No statement uses or specializes #official; click here to add one.