diff --git a/lab-materials/07-agent-frameworks/7.1-react-agents-langgraph.ipynb b/lab-materials/07-agent-frameworks/7.1-react-agents-langgraph.ipynb
index b453952..5d0ca6f 100644
--- a/lab-materials/07-agent-frameworks/7.1-react-agents-langgraph.ipynb
+++ b/lab-materials/07-agent-frameworks/7.1-react-agents-langgraph.ipynb
@@ -707,7 +707,9 @@
     "   - Using DuckDuckGo, the agent finds that Kathmandu, Nepal, is the closest city to Mount Everest.\n",
     "\n",
     "4. **The agent calculates the distance from Kathmandu to Mount Everest**  \n",
-    "   - By applying the Haversine formula, the agent determines the distance to be approximately **120 kilometers**.\n"
+    "   - By applying the Haversine formula, the agent determines the distance to be approximately **120 kilometers**.\n",
+    "\n",
+    ">NOTE: this numbers are approximated"
    ]
   },
   {