(*A-CONTRIBUTE
   (FORM FINITE)
   (TENSE PAST)
   (MOOD DECLARATIVE)
   (PUNCTUATION PERIOD)
   (IMPERSONAL -)
   (ARGUMENT-CLASS AGENT+RECIPIENT)
   (AGENT
      (*O-FACTOR
         (NUMBER PLURAL)
         (REFERENCE NO-REFERENCE)
         (PERSON THIRD)
         (UNIT -)
         (QUANTIFIER
            (*QUANT-MANY
               (REFERENCE NO-REFERENCE)
               (NUMBER (:OR
                 SINGULAR
                 PLURAL))))))
   (RECIPIENT
        (*O-SUCCESS
            (UNIT -)
            (NUMBER SINGULAR)
            (REFERENCE NO-REFERENCE)
            (PERSON THIRD)
            (POSSESSOR
                (*PROP-PRODEM
                   (NUMBER SINGULAR)
                   (IMPLIED-REFERENCE +)
                   (PERSON THIRD)
                   (UNIT -))))))