Message
sec with @sec-type "@sec-type" should be captured as a child of the article back element
Rule XPath:
This rule ASSERTS the following, raising an alert if FALSE:
parent::back or not(tokenize(@sec-type, ' ') = ('supplementary-material', 'data-availability',
'open-scholarship', 'orcid-section', 'COI-statement', 'coi-statement'))