#invocation.petition__supplication  a prayer asking God's help as part of a religious service
  supertype:  #petition.prayer__prayer__communion__orison  reverent petition to a deity
  subtype:  #rogation  a solemn supplication ceremony prescribed by the church
  part of:  #religious_service__religiousservice__service__divine_service  the act of public worship following prescribed rules; "the Sunday service"

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