diff --git a/slides/talks/2019-5-VizierCaveats/index.html b/slides/talks/2019-5-VizierCaveats/index.html
index 696c08bb..d40d1c86 100644
--- a/slides/talks/2019-5-VizierCaveats/index.html
+++ b/slides/talks/2019-5-VizierCaveats/index.html
@@ -93,7 +93,7 @@
 
         <section>
           <h3>Act 1</h3>
-          <p>Alice wants to analize two unaligned time series.</p>
+          <p>Alice wants to analyze two unaligned time series.</p>
         </section>
 
         <section>
@@ -559,8 +559,10 @@
       </section>
 
       <section>
+
+
         <section>
-          <h3>How are caveats propagated?</h3>
+          <h3>Has anyone asked about "where" provenance?</h3>
           <p class="fragment">Another brief digression...</p>
         </section>
         <section>
@@ -765,8 +767,9 @@
           <div class="fragment">
           becomes
           <pre><code class="sql">
-      SELECT salary, 
-             GROUP_OR(_caveat_field_salary) AS _caveat_field_salary,
+      SELECT AVG(salary), 
+             GROUP_OR(_caveat_field_salary
+                      OR _caveat_row) AS _caveat_field_salary,
              FALSE AS _caveat_row
       FROM survey_responses
           </code></pre>
@@ -876,13 +879,13 @@
             C, D, E
      FROM R
    
-   SELECT C, D, E FROM data_source 
+   SELECT C, D, E FROM data_source WHERE ROWID = i
           </code></pre>
           <p>becomes</p>
           <pre><code class="sql">
            SELECT 'valid if '& B &' is within tolerances.' 
                     AS caveat_message
-           FROM R
+           FROM R WHERE ROWID = i
           </code></pre>
         </section>