#lineman.football_player  one of the players on the line of scrimmage
  supertype:  #football_player__footballer  an athlete who plays American football
  subtype:  #football_snapper__center__snapper  (football) the person who plays center on the line of scrimmage and snaps the ball to the quarterback; "the center fumbled the handoff"
  subtype:  #football_end-line-man__end  (football) the person who plays at one end of the line of scrimmage; "the end managed to hold onto the pass"
     subtype:  #split_end__splitend  (football) an offensive end who lines up at a distance from the other linemen
     subtype:  #tight_end__tightend  (football) an offensive end who lines up close to the tackle
  subtype:  #football_guard__guard  the person who plays that position on a football team; "the left guard was injured on the play"
  subtype:  #tackle.lineman  the person who plays that position on a football team; "the right tackle is a straight A student"

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