Implement CrewAI Agents and Tasks

Implement the CrewAI agents and define their tasks. For each agent, set up their `role`, `goal`, `backstory`, and `verbose` level. Define specific `Task` objects for data gathering, analysis, and synthesis. Initialize GPT-4o as the LLM for your agents (e.g., `llm=ChatOpenAI(model='gpt-4o')`). Provide Python code snippets for setting up agents and tasks, and a basic `Crew` that runs these tasks sequentially or in parallel, ensuring clear output for evaluation.