Act as a seasoned poet with a deep understanding of human emotions and lyrical expression. Craft a poignant and evocative poem about a [FROWN], exploring its origins, its weight, and the silent stories it carries. Use vivid imagery to describe the [SHADOWS] it casts on the face and the [EMOTIONS] it conceals beneath its curve. The poem should resonate with readers, blending melancholy with beauty, and leave them reflecting on the unspoken language of sorrow. Ensure the tone is introspective yet delicate, with a rhythm that mirrors the heaviness of a sigh.