diff --git a/02_Summarization/02.long-text-summarization-titan.ipynb b/02_Summarization/02.long-text-summarization-titan.ipynb
index 488da3ea..38ad13e9 100644
--- a/02_Summarization/02.long-text-summarization-titan.ipynb
+++ b/02_Summarization/02.long-text-summarization-titan.ipynb
@@ -129,16 +129,16 @@
    "source": [
     "from langchain.llms.bedrock import Bedrock\n",
     "\n",
-    "llm = Bedrock(model_id=\"amazon.titan-tg1-large\", \n",
-    "              model_kwargs ={\n",
-    "                \"textGenerationConfig\": {\n",
-    "                   \"maxTokenCount\": 4096,\n",
-    "                   \"stopSequences\": [],\n",
-    "                   \"temperature\":0,\n",
-    "                   \"topP\":1\n",
-    "                },\n",
-    "              },\n",
-    "              client=boto3_bedrock)"
+    "llm = Bedrock(\n",
+    "    model_id=\"amazon.titan-tg1-large\",\n",
+    "    model_kwargs={\n",
+    "        \"maxTokenCount\": 4096,\n",
+    "        \"stopSequences\": [],\n",
+    "        \"temperature\": 0,\n",
+    "        \"topP\": 1,\n",
+    "    },\n",
+    "    client=boto3_bedrock,\n",
+    ")"
    ]
   },
   {
diff --git a/03_QuestionAnswering/01_qa_w_rag_claude.ipynb b/03_QuestionAnswering/01_qa_w_rag_claude.ipynb
index cbd7cb15..96d53e78 100644
--- a/03_QuestionAnswering/01_qa_w_rag_claude.ipynb
+++ b/03_QuestionAnswering/01_qa_w_rag_claude.ipynb
@@ -204,13 +204,15 @@
    "outputs": [],
    "source": [
     "from urllib.request import urlretrieve\n",
+    "\n",
+    "os.makedirs(\"data\", exist_ok=True)\n",
     "files = [\n",
-    "    'https://www.irs.gov/pub/irs-pdf/p1544.pdf',\n",
-    "    'https://www.irs.gov/pub/irs-pdf/p15.pdf',\n",
-    "    'https://www.irs.gov/pub/irs-pdf/p1212.pdf'\n",
+    "    \"https://www.irs.gov/pub/irs-pdf/p1544.pdf\",\n",
+    "    \"https://www.irs.gov/pub/irs-pdf/p15.pdf\",\n",
+    "    \"https://www.irs.gov/pub/irs-pdf/p1212.pdf\",\n",
     "]\n",
     "for url in files:\n",
-    "    file_path = './data/' + url.split('/')[-1]\n",
+    "    file_path = os.path.join(\"data\", url.rpartition(\"/\")[2])\n",
     "    urlretrieve(url, file_path)"
    ]
   },
@@ -443,7 +445,6 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "\n",
     "from langchain.chains import RetrievalQA\n",
     "from langchain.prompts import PromptTemplate\n",
     "\n",
@@ -453,6 +454,7 @@
     "\n",
     "Question: {question}\n",
     "Assistant:\"\"\"\n",
+    "\n",
     "PROMPT = PromptTemplate(\n",
     "    template=prompt_template, input_variables=[\"context\", \"question\"]\n",
     ")\n",
diff --git a/04_Chatbot/00_Chatbot_Claude.ipynb b/04_Chatbot/00_Chatbot_Claude.ipynb
index fe7b31dc..babb9ee0 100644
--- a/04_Chatbot/00_Chatbot_Claude.ipynb
+++ b/04_Chatbot/00_Chatbot_Claude.ipynb
@@ -162,7 +162,7 @@
     ")\n",
     "memory = ConversationBufferMemory()\n",
     "conversation = ConversationChain(\n",
-    "    llm=titan_llm, verbose=True, memory=memory\n",
+    "    llm=cl_llm, verbose=True, memory=memory\n",
     ")\n",
     "\n",
     "print_ww(conversation.predict(input=\"Hi there!\"))"
@@ -591,7 +591,6 @@
    },
    "outputs": [],
    "source": [
-    "\n",
     "from langchain.chains.conversational_retrieval.prompts import CONDENSE_QUESTION_PROMPT\n",
     "\n",
     "print_ww(CONDENSE_QUESTION_PROMPT.template)"