nbsp was not found. incredible...

<?xml version="1.0" encoding="EUC-JP"?>
<!DOCTYPE jp:memo-po-pat-exam PUBLIC "-//JPO//DTD MEMO (PRELIMINARY OPINION) BY
PATENT SUBSTANTIAL EXAMINATION 1.0//EN" "mem-pte2.dtd" []>
<jp:memo-po-pat-exam lang="ja" dtd-version="1.0"
xmlns:jp="http://www.jpo.go.jp">
<jp:domestic-document-a971010 jp:kind-of-law="patent">
<jp:document-name> ABCDEFG</jp:document-name>
************************************************************
Xerces said "line 5, column 25 Message: Entity 'nbsp' was not found".
It is incredible that there is a purser who cannot use NBSP for this world.
Only I do not necessarily write this.
It cannot be guaranteed that NBSP is not used for XML which it is going to read.