vann:usageNote provides useful additional notes about OML terms.
However, the definition of http://purl.org/vocab/vann/usageNote says:
So it's a URL not a string, and you cannot use it like this.
Use skos:scopeNote instead, which is a literal, and can be used with any resource (not only skos:Concept)
vann:usageNoteprovides useful additional notes about OML terms.However, the definition of http://purl.org/vocab/vann/usageNote says:
A reference to a resource that provides information on how this resource is to be used.
It is a sub-property of See also.
So it's a URL not a string, and you cannot use it like this.
Use
skos:scopeNoteinstead, which is a literal, and can be used with any resource (not onlyskos:Concept)