langchain/tests/unit_tests/document_loaders/sample_documents/sample_notebook_missingmetadata.enex

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE en-export SYSTEM "http://xml.evernote.com/pub/evernote-export4.dtd">
<en-export export-date="20230611T011239Z" application="Evernote" version="10.56.9">
    <note>
        <content>
            I only have content, no metadata
        </content>
    </note>
</en-export>