1 make-existence-index    [process Listener 1]
      Values Returned:
        ((cl-user::exists cl-user::Wg) (cl-user::exists cl-user::Wf))
  2 make-exists-statement
        Arguments:
          gizmo::?x
        Values Returned:
          (cl-user::exists gizmo::?x)
  3 fetch
        Arguments:
          (cl-user::exists gizmo::?x)
        Values Returned:
          ((cl-user::exists cl-user::Wg) (cl-user::exists cl-user::Wf))
    4 internal-fetch
          Arguments:
            (cl-user::exists gizmo::?x)
            :form
            nil
            nil
          Values Returned:
            ((cl-user::exists cl-user::Wg) (cl-user::exists cl-user::Wf))
      5 get-fact-candidates
            Arguments:
              (cl-user::exists gizmo::?x)
            Values Returned:
              ((<Datum 21> <Datum 18>))
              2
        6 get-dtree
              Arguments:
                cl-user::exists
              Values Returned:
                #(#(nil nil #<equal hash-table with 1 entry @ #x21faeef2> #<equal hash-table with 1 entry @ #x21faef12> (0) (0)) #(#(nil nil #<equal hash-table with 2 entries @ #x21febc62> #<equal hash-table with 0 entries @ #x21febc82> (0) (1 <Rule 5>)) #(nil nil #<equal hash-table with 0 entries @ #x21febca2> #<equal hash-table with 0 entries @ #x21febcc2> (0) (0)) #<equal hash-table with 0 entries @ #x21faef72> #<equal hash-table with 0 entries @ #x21faef92> (0) (0)) #<equal hash-table with 0 entries @ #x21f95b62> #<equal hash-table with 0 entries @ #x21f95b82> (0) (0))
        7 dtree-fetch
              Arguments:
                (cl-user::exists gizmo::?x)
                #(#(nil nil #<equal hash-table with 1 entry @ #x21faeef2> #<equal hash-table with 1 entry @ #x21faef12> (0) (0)) #(#(nil nil #<equal hash-table with 2 entries @ #x21febc62> #<equal hash-table with 0 entries @ #x21febc82> (0) (1 <Rule 5>)) #(nil nil #<equal hash-table with 0 entries @ #x21febca2> #<equal hash-table with 0 entries @ #x21febcc2> (0) (0)) #<equal hash-table with 0 entries @ #x21faef72> #<equal hash-table with 0 entries @ #x21faef92> (0) (0)) #<equal hash-table with 0 entries @ #x21f95b62> #<equal hash-table with 0 entries @ #x21f95b82> (0) (0))
                nil
                0
                nil
                536870911
                :fact
              Values Returned:
                ((<Datum 21> <Datum 18>))
                2