A Generative AI Engineer is building a multi-stage GenAI workflow to help legal analysts assess regulatory compliance across multiple jurisdictions. The process involves: 1. Extracting region-specific legal entities 2. Comparing them against jurisdictional rules 3. Generating a compliance summary The engineer wants to define the reasoning pipeline in a way that enables modular and reusable components. Which of the following is the best initial approach to designing the tool sequence for this task?