About: `URL` should not be subclass of `Text`

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type	Task
Date Created	2021-02-26 11:14:46Z (xsd:dateTime)
Date Modified	2021-02-26 11:14:46Z (xsd:dateTime)
Title	`URL` should not be subclass of `Text`
described by	https://github.com/schemaorg/schemaorg/issues?q=is:issue+is:open+url https://github.com/schemaorg/schemaorg/issues?q=is:issue+is:open+mainEntity
Description	IMHO this should be removed: ```ttl schema:URL rdfs:subClassOf schema:Text ``` OWL has a dichotomy between ObjectProperties and DatatypeProperties. Schema doesn't have such dichotomy, but in a sense the Schema JSONLD context does: it declares 71 props to be URLs (`@id`), so they can't carry literal values. I checked in the ontology, and none of them allow datatype values (#1747): This doesn't find any amongst those 71 props, if no reasoning is employed: ```sparql ?p schema:rangeIncludes/rdf:type schema:DataType ``` Many of these props have range `URL`. So if RDFS reasoning is employed, the above subclass declaration will imply that they allow datatype values. Many OWL ontologies use xsd:AnyURI literal for "free-floating URLs" vs a resource (owl:Thing) for URLs that carry some statements. But there's no such distinction in Schema. In short: if you even consider `URL` to be a literal, it's a very special kind of literal, so please don't declare it subclass of `Text`.
bugzilla:id	817268763
bugzilla:number	2850
bugzilla:state	open
bugzilla:comments	0
gh:project	https://github.com/schemaorg/schemaorg
developer	VladimirAlexiev
homepage	`URL` should not be subclass of `Text`
is object of	Embedded HTML Metadata Statement 71
is links to of	https://github.com/schemaorg/schemaorg/issues?q=is:issue+is:open+url
is gh:has_issue of	https://github.com/schemaorg/schemaorg/issues?q=is:issue+is:open+url https://github.com/schemaorg/schemaorg/issues?q=is:issue+is:open+mainEntity
is homepage of	`URL` should not be subclass of `Text`

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