Update app.py

app.py

@@ -1,12 +1,18 @@
 import gradio as gr
 
 def greet(text):
-
+     
     from langchain.chat_models import ChatOllama
     from langchain.document_loaders import WebBaseLoader
     from langchain.chains.summarize import load_summarize_chain
     
     loader = WebBaseLoader("https://lilianweng.github.io/posts/2023-06-23-agent/")
+    docs = loader.load()
+    
+    llm = ChatOllama(temperature=0, model_name="falcon:7b")
+    chain = load_summarize_chain(llm, chain_type="stuff")
+    
+    chain.run(docs)
 
     from langchain.chains.llm import LLMChain
     from langchain.prompts import PromptTemplate