property scopes (v2)

shacl/index.html

@@ -734,20 +734,23 @@ <h4>General scopes (sh:scope)</h4>
 					<section id="PropertyScope">
 						<h5>Property scopes (sh:PropertyScope)</h5>
 						<p>
-							The property scope for a property <code>p</code> is defined as the set of subjects that appear in a triple with <code>p</code> as a predicate.
-							Property scopes can be set by linking a shape to a resource <code>r</code> of type <code>sh:PropertyScope</code> with the <code>sh:scope</code> property.
-							The property <code>p</code> is linked from <code>r</code> with the property <code>sh:predicate</code>.
+							A property scope for property <code>p</code> is defined as the set of subjects in the data graph that appear in a triple with <code>p</code> as a predicate.
 						</p>
+
 						<div class="def def-sparql">
 							<div class="def-header">SPARQL DEFINITION</div>
 <pre class="def-sparql-body">
 SELECT DISTINCT ?this
 WHERE {
-	?this $predicate ?any .
+	?this $p ?any .
 }</pre>
 						</div>
 						<p>
-							The following example uses <code>sh:PropertyScope</code> to define that the constraint that applies to all resources that have any value for the property <code>ex:knows</code>:
+							A shape defines a property scope with the <code>sh:scope</code> predicate and object an RDF node <code>r</code> of type <code>sh:PropertyScope</code>.
+
+							The RDF node <code>r</code> must provide exactly one value for <code>p</code> with the <code>sh:predicate</code> property.
+
+
 						</p>
 						<pre class="example-shapes">
 ex:PropertyScopeExampleShape