sem.datatypesem.datatypesemdatatype/apidoc/8.0/sem:datatype.xml
Returns the name of the simple type of the atomic value argument as a SPARQL
style IRI. If the value is derived from sem:unknown or sem:invalid, the
datatype IRI part of those values is returned.
This XQuery function backs up the SPARQL datatype() function.
This function is a built-in.
The value to return the type of.
valuexs.anyAtomicTypesem.iri