Example output
/imagine a whimsical world beneath the waves, where a bright yellow submarine cruises through an underwater city made of coral and shells. As the submarine glides along, schools of colorful fish swim alongside, and friendly sea creatures like dolphins and whales playfully leap out of the water. The submarine's portholes reveal a cozy interior, with the Beatles' iconic lyric "We all live in a yellow submarine" scrawled on the walls. The art style should be reminiscent of a children's storybook, with bold colors and simple shapes. --ar 3:2