support prompts in other languages

LANGUAGE_PROMPT.py

@@ -0,0 +1,18 @@
+from langchain.prompts.prompt import PromptTemplate
+
+_template = """Given the following conversation and a follow up question, rephrase the follow up question to be a standalone question in the language of the question.
+
+Chat History:
+{chat_history}
+Follow Up Input: {question}
+Standalone question:"""
+CONDENSE_QUESTION_PROMPT = PromptTemplate.from_template(_template)
+
+prompt_template = """Use the following pieces of context to answer the question at the end in the language of the question. If you don't know the answer, just say that you don't know, don't try to make up an answer. 
+
+{context}
+
+Question: {question}
+Helpful Answer:"""
+QA_PROMPT = PromptTemplate(
+    template=prompt_template, input_variables=["context", "question"])

question.py

@@ -7,6 +7,9 @@
 from langchain.chat_models import ChatAnthropic
 from langchain.vectorstores import SupabaseVectorStore
 from stats import add_usage
+import LANGUAGE_PROMPT
+
+ConversationalRetrievalChain.prompts = LANGUAGE_PROMPT
 
 memory = ConversationBufferMemory(
     memory_key="chat_history", return_messages=True)