[Here](https://github.com/i40-Tools/StandardOntology/blob/96401ec2ee7f93e671edc9bbc8a5139a0a2ade2b/sto.ttl#L6098) the standard contains, quite clear in the description that it is mapped to other standards but no relation is encoded.
Here the standard contains, quite clear in the description that it is mapped to other standards but no relation is encoded.