http://www.w3.org/ns/prov#value | - URL, i.e. locations (a &lt;url&gt; CSS data type, though it wasn't explicitly defined that way).<br> <br> In CSS Level 2, the same functional notation was extended to describe any URI, being a URL or URN. This led to the confusing fact that url() was used to create a &lt;uri&gt; CSS data type.
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