def process_sources(sources_document: list[str], use_source_ids: list[str]) -> list[str]:
     sources = []
     for source_document in sources_document:
          source_document = source_document.model_dump()
          metadata = source_document.get("metadata")
          source_id = metadata.get("source_id")
          metadata = {
               "title": metadata.get("title"),
               "start_timestamp": metadata.get("start_timestamp"),
               "page_content": source_document.get("page_content")
          }
          if source_id in use_source_ids:
               sources.append(metadata)
     return sources