tap#description  for connecting an object to an informal representation of it, typically a node with a string inside; in WebKB, the FT and FCG notations permit to avoid using this relation type
  equal:  daml#comment  rdfs#comment (pm)  sumo#documentation (pm)
  supertype:  dc#Description (?,pm#entity)  to specify an account of the content of a resource; in WebKB, pm#topic or pmdescr SHOULD BE USED INSTEAD
     supertype:  pm#binary_relation (?,?)  in WebKB, most relation types are binary and some have a variable number of arguments (as in KIF), hence this type is currently only specialized by types that I do not want to see as direct subtypes of pm#relation
        supertype:  pm#relation_with_particular_property (*)  this rather fuzzy type permits to group categorization schemes less common than those covered by the previous sibling categories
           >part of:  pm#relation__related_thing__relatedthing___related_with  type for any relation (unary, binary, ..., *-ary) and instance of pm#relation_type

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