code: def process_subj_or_pred(self, component: Union[URIRef, str]) -> URIRef:
          
          if 'http' in component:
              prefix = self.find_prefix(component) # Find uri in iri based on common_namespaces
              if prefix: self.process_prefix(prefix) # if match, will add to Graph namespaces
              return URIRef(component)
          elif ':' in component:
              presumed_prefix, info = component.split(':', 1)
              namespace: Union[Namespace, None] = self.process_prefix(presumed_prefix)
              if not namespace: exit(component + ': qname namespace does\'t exist yet.')
              return namespace[info]
          exit(component + ': is not a valid subject or predicate')
docs: Adds viable uri from iri or expands viable qname to iri to be triple ready
  
          Need to have a viable qualified name (qname) in order to use a qname. You can make it
          viable by either add the namespace beforehand with add_namespace(s) or if its already
          in the local common_namespaces preloaded.
  
          Args:
              component: entity subject or predicate to be expanded or have its uri saved.
  
          Returns:
              rdflib URIRef ready subject or predicate to be put into a triple.
  
          Raises:
              SystemExit: When expecting a qname to be expanded, but is not valid or if
                  component is not a qualified name or a iri.