# Extraction with OpenAI Function Calling This template shows how to do extraction of structured data from unstructured data, using OpenAI [function calling](https://python.langchain.com/docs/modules/chains/how_to/openai_functions). Specify the information you want to extract in `chain.py` By default, it will extract the title and author of papers. ## LLM This template will use `OpenAI` by default. Be sure that `OPENAI_API_KEY` is set in your environment.