#service.activity  (common law) the acts performed by an English feudal tenant for the benefit of his lord which formed the consideration for the property granted to him
  supertype:  #activity  any specific activity or pursuit; "they avoided all recreational activity"
  subtype:  #socage  land tenure by agricultural service or payment of rent; not burdened with military service
  subtype:  #military_service  land tenure by service in the lord's army
  subtype:  #knight's_service  land tenure by service to the lord as a knight

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