Setting model temperature to 0.

main.py

@@ -74,7 +74,7 @@ def qa(file, query, chain_type, k):
     # create a chain to answer questions
 
     qa = RetrievalQA.from_chain_type(
-        llm=OpenAI(), chain_type=chain_type, retriever=retriever, return_source_documents=True)
+        llm=OpenAI(temperature=0), chain_type=chain_type, retriever=retriever, return_source_documents=True)
     result = qa({"query": query})
     print(result['result'])
     return result