add masterclass videos

Author: kschweikert

index.html

@@ -156,12 +156,17 @@ <h3 class="w3-border-bottom w3-border-light-grey w3-padding-16">Competency quest
 <ul><li>E.g. What potential contamination sources exist 20 miles upstream from the sample result? What wells are hydrologically connected to other wells with a reported contamination of +10ppt
    </li></ul></li>
     </ul>
-  </div>
-</div>
 
 
 
+<h3 class="w3-border-bottom w3-border-light-grey w3-padding-16">Project Overview</h3>
+<div class="w3-center w3-padding-32">
+<iframe width="560" height="315" src="https://www.youtube.com/embed/vS82LsLjZ5U?si=DePgmMknHwZyUBLP" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
+</div>
+
 <!-- End page content -->
+   </div>
+</div>
 </div>
 
 

kg.html

@@ -29,6 +29,11 @@ <h3 class="w3-border-bottom w3-border-light-grey w3-padding-16">Architecture</h3
      <p>This data is organized into a series of interconnected knowledge graphs to facilitate reuse and modularize the large graphs.</p>
     <img src="images/SAWGraphOverview-Jan2025.png" style="width:100%;max-width:1000px" class="w3-margin-top">
   </div>
+
+<h2>Query Overview</h2>
+<div class="w3-center w3-padding-32">
+  <iframe width="560" height="315" src="https://www.youtube.com/embed/hysIlKUwhR4?si=Wc-FjaIGqt5BSRol" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
+</div>
 <div class="w3-container" id="data-sources">
   <div class="w3-container w3-padding-32">
     <h4 class="w3-border-bottom w3-border-light-grey w3-padding-16">Source data</h4>

ontologies.html

@@ -27,6 +27,10 @@ <h1>Ontologies</h1>
 
 <img src="images\SAWGraph-Ontology-Overview (simple).png" style="width:100%;max-width:1000px" class="w3-margin-top">
 
+<h2>Ontologies Overview</h2>
+<div class=""w3-center w3-padding-32>
+  <iframe width="560" height="315" src="https://www.youtube.com/embed/0Tx27vZMWpE?si=qvOSfLU7DNw_Lgvs" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
+</div>
 <h2>SAWGraph (PFAS) KG</h2>
 <table class="w3-table w3-bordered w3-striped w3-border w3-hoverable w3-white">
   <tr>