diff --git a/examples/Chapter1.ipynb b/examples/Chapter1.ipynb
index 066768a..f3ce06a 100644
--- a/examples/Chapter1.ipynb
+++ b/examples/Chapter1.ipynb
@@ -308,7 +308,7 @@
        "output_type": "pyout",
        "prompt_number": 7,
        "text": [
-        "((1 . U) (2 . V) (3 . W) (4 . Z))"
+        "T"
        ]
       }
      ],
@@ -857,4 +857,4 @@
    "metadata": {}
   }
  ]
-}
\ No newline at end of file
+}