diff --git a/sparql/ncbi_orthologs_pair.rq b/sparql/ncbi_orthologs_pair.rq
deleted file mode 100755
index 3461a0b..0000000
--- a/sparql/ncbi_orthologs_pair.rq
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/usr/bin/env spang2
-# @endpoint https://spang.dbcls.jp/sparql
-# @option -a
-
-PREFIX orth: <http://purl.org/net/orth#>
-PREFIX taxid: <http://identifiers.org/taxonomy/>
-
-SELECT *
-WHERE {
-  ?gene1 orth:hasOrtholog ?gene2 .
-  ?gene1 orth:taxon taxid:7955 .
-  ?gene2 orth:taxon taxid:8090 .
-}