DC has the ability to specify subjects such as UDC, LCSH or DDC. How would these be converted to schema.org?

{
"@context": "https://schema.org/",
"@type": "Book",
"name": "British Isles - A History",
"about": {
"@type": "DefinedTerm",
"@id": "https://id.oclc.org/worldcat/ddc/E48m7BJXdrm3XY4Xv86d88WGt3",
"name": "British Isles",
"termCode": "941",
"inDefinedTermSet": "https://id.oclc.org/worldcat/ddc/"
}
}