#contribution.effort__part__share  any one of a number of individual efforts in a common endeavor: "I am proud of my contribution to the team's success"; "they all did their share of the work"
  supertype:  #effort__attempt__endeavor__endeavour__try  earnest and conscientious activity intended to do or accomplish something: "made an effort to cover all the reading material"; "wished him luck in his endeavor"; "she gave it a good try"
  subtype:  #end.contribution  the part you are expected to play; "he held up his end"

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