Ignore fully numeric inputs in MDConcObjectTagRelTypes, map them to

general tags

src/MDConcObjectTagRelTypes.php

@@ -103,6 +103,8 @@ final class MDConcObjectTagRelTypes implements MDImporterConcordanceListInterfac
             return self::RELATION_TYPE_NAMES[trim(strtolower($input))];
         }
 
+        if (is_numeric($input)) return 'tag';
+
         if (isset(self::RELATION_TYPES_MAPPED_TO_EVENTS[strtolower($input)])) {
             throw new MDImporterTagRelationTypeIsEventType("Tag-object relationship type is signifies not tags, but an event component.");
         }