diff --git a/ch3/jupyter-notebooks/data_classes.ipynb b/ch3/jupyter-notebooks/data_classes.ipynb
index 5fb82d8..8419880 100644
--- a/ch3/jupyter-notebooks/data_classes.ipynb
+++ b/ch3/jupyter-notebooks/data_classes.ipynb
@@ -761,6 +761,13 @@
     "iris_docstore.to_dict()"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "We will now turn our attention to a data structure focused on question and answer systems."
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},