---------------------- Hmm, I don't know enough to give you a confident answer yet. The extracts provided do not contain specific information on how to add metadata to a source without using the OpenAI API. However, they do mention the use of metadata in the context of LlamaIndex, such as the MarvinMetadataExtractor and MetadataExtractor classes.
For more detailed information, I recommend checking out the LlamaIndex documentation () or the LlamaIndex GitHub repository (). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------