docs: def tables(subjects=None,
             pastDays=None,
             include_inactive=False,
             lang=DEFAULT_LANGUAGE):
      """Find tables placed under given subjects.
      """
      request = Request('tables',
                        subjects=subjects,
                        pastDays=pastDays,
                        includeInactive=include_inactive,
                        lang=lang)
  
      return (Table(table, lang=lang) for table in request.json)