added introduction paragraph for DatasetSeries

docs/index.html

@@ -10657,9 +10657,17 @@ <h4>Property: image</h4>
     <section id="properties-for-dataset-series">
       <h2>Dataset Series</h2>
       <aside class="note">Aligned with DCAT</aside>
-      <!-- TODO: Write a Paragraph describing Dataset Series -->
-      <!-- <p>
-                      </p> -->
+      <p>
+        The <code>DatasetSeries</code> concept in the DCAT-US specification serves a dual purpose. Primarily, it
+        represents a collection of related datasets that share common characteristics and are published as a series,
+        facilitating the organization and discovery of datasets that evolve over time or are updated regularly. Beyond
+        this, <code>DatasetSeries</code> also provides a mechanism for grouping datasets into thematic collections,
+        regardless of whether these collections form a temporal series. This flexibility enhances the specification's
+        utility by supporting a wider range of data publication practices, enabling users to effectively discover and
+        understand datasets grouped by series or thematic similarity.
+      </p>
+
+
       <table class="def">
         <tr>
           <th>RDF Class:</th>