You decide to take a walk in a nearby park to clear your head after a hectic morning at work. It's a cool autumn day, and the leaves are just starting to change colour. The park is mostly empty, save for a few runners and dog walkers. As you walk along the paved path, you notice that the weather has brought a fresh, crisp scent to the air. The peaceful sounds of rustling leaves and chirping birds fill the air, and you can't help but feel a sense of serenity wash over you.