diff --git a/README.md b/README.md
index 54de6a4..7906629 100644
--- a/README.md
+++ b/README.md
@@ -23,16 +23,18 @@ Creator
 RDF config
 * https://github.com/dbcls/rdf-config/tree/master/config/ncbigene
 
-Metadata
-* https://github.com/dbcls/rdf-config/blob/master/config/ncbigene/metadata.yaml
-* https://github.com/dbcls/rdf-config/blob/master/config/ncbigene/metadata_ja.yaml
-
 Schema
 * https://raw.githubusercontent.com/dbcls/rdf-config/master/config/ncbigene/schema.svg
 
-Ontology
-* https://dbcls.github.io/ncbigene-rdf/ontology.ttl (GitHub Pages)
+Metadata
+* https://github.com/dbcls/rdf-config/blob/master/config/ncbigene/metadata.yaml
+* https://github.com/dbcls/rdf-config/blob/master/config/ncbigene/metadata_ja.yaml
 
 SPARQL
 * [gene_info.rq](https://github.com/dbcls/ncbigene-rdf/blob/main/sparql/gene_info.rq)
 * [gene_types.rq](https://github.com/dbcls/ncbigene-rdf/blob/main/sparql/gene_types.rq)
+
+## Ontology
+
+Ontology for NCBI Gene
+* https://dbcls.github.io/ncbigene-rdf/ontology.ttl (GitHub Pages)