Current definition for isBasedOn:

A resource that was used in the creation of this resource. This term can be repeated for multiple sources. For example, http://example.com/great-multiplication-intro.html.

I don’t understand what the last sentence (with the example URL) is supposed to mean (just to show how a URL value is supposed to look like?). And the second sentence doesn’t seem to be necessary, as this is the case for every property.

So I think the definition could just be:

A resource that was used in the creation of this resource.

+ examples that show the case of having one resource and the case of having multiple resources.

Opinions?