#participation__engagement__involvement  sharing the activities of a group; "the teacher tried to increase his students' engagement in class activities"
  exclusion:  #non-engagement
  supertype:  #group_action__groupaction  action taken by a group of people
  subtype:  #commitment  an engagement by contract involving financial obligation; "his business commitments took him to London"
     subtype:  #incurrence  the act of incurring (making yourself subject to something undesirable)
  subtype:  #intervention__intercession  the act of intervening (as to mediate a dispute)
     subtype:  #intermediation__mediation  the act of mediating
  subtype:  #group_participation__groupparticipation  participation by all members of a group

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