Comment by jauco

To be fair schema.org and dublin core say “when a property is name ‘title’ it means …” and you can expect to find the following properties…

Json-ld says: if you want to know whether the “title” property means the schema.org or the dublin core variant then you can find out which it is by <json-ld algorithm>

So you’d always use json-ld _with_ schema.org or something.