code: def replace_predicate(rdf, fromuri, touri, subjecttypes=None, inverse=False):
      
  
      if fromuri == touri:
          return
      for s, o in rdf.subject_objects(fromuri):
          if subjecttypes is not None:
              typeok = False
              for t in subjecttypes:
                  if (s, RDF.type, t) in rdf:
                      typeok = True
              if not typeok:
                  continue
          rdf.remove((s, fromuri, o))
          if touri is not None:
              if not isinstance(touri, (list, tuple)):
                  touri = [touri]
              for val in touri:
                  if not isinstance(val, tuple):
                      val = (val, False)
                  uri, inverse = val
                  if uri is None:
                      continue
                  if inverse:
                      rdf.add((o, uri, s))
                  else:
                      rdf.add((s, uri, o))
docs: Replace occurrences of fromuri as predicate with touri in given model.
  
      If touri=None, will delete all occurrences of fromuri instead.
      If touri is a list or tuple of URIRef, all values will be inserted. If
      touri is a list of (URIRef, boolean) tuples, the boolean value will be
      used to determine whether an inverse property is created (if True) or
      not (if False). If a subjecttypes sequence is given, modify only those
      triples where the subject is one of the provided types.