Which renowned neoclassical poet, known for exploring deep subjects like mortality, also displayed a playful tone by composing an ode about a cat that drowned in a tank of goldfish?

Explanation

Among these poets, Thomas Gray is recognized for addressing serious themes such as death in his work. However, he also exhibited a lighter side in his poetry, famously writing an ode to a cat that tragically drowned in a goldfish bowl. The other poets listed primarily focused on different subjects or styles.