{"knowledge_schema": {"broad_category": "Physics \u2192 Optics \u2192 Light Absorption and Emission", "refinement": "This problem involves understanding the relationship between light absorption and the color emitted by a substance based on the wavelength of light it absorbs.", "specific_scope": "The focus is on a specific pigment that absorbs light at a wavelength of 450 nm and determining the complementary color that is emitted.", "goal": "Identify the color of light emitted by the organic compound based on the wavelength of light it absorbs."}, "summary": "This problem relates to the principles of light absorption and emission, where a pigment absorbs light at a specific wavelength (450 nm in this case). The color emitted by the pigment is typically the complementary color of the absorbed light. Since the pigment absorbs blue light (around 450 nm), it will emit yellow light, which is the complementary color. The goal is to determine the emitted color based on the absorbed wavelength."}