Relation pm#argument (pm#description_content/medium/container,pm#description_content/medium/container)
  supertype:  pm#argumentation_relation__argumentationrelation
  subtype:  pm#weak_argument (pm#description_content/medium/container,pm#description_content/medium/container)
  subtype:  pm#strong_argument (pm#description_content/medium/container,pm#description_content/medium/container)
     subtype:  pm#proof (pm#description_content/medium/container,pm#description_content/medium/container)
  subtype:  pm#illustration (pm#description_content/medium/container,pm#description_content/medium/container)
  subtype:  pm#argument_by_authority (pm#description_content/medium/container,pm#description_content/medium/container)
  subtype:  pm#argument_by_popularity (pm#description_content/medium/container,pm#description_content/medium/container)