/usr/share/doc/xmlstarlet/examples/ns1 is in xmlstarlet 1.6.1-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 | #!/bin/sh
# Predefine namespaces for XPath expressions
./xmlstarlet sel -T -N xsql=urn:oracle-xsql -t -v /xsql:query --nl xsql/jobserve.xsql
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