{"knowledge_schema": {"broad_category": "Astronomy \u2192 Exoplanets \u2192 Density Calculations", "refinement": "This problem involves comparing the densities of different exoplanets based on their mass and volume, considering their composition.", "specific_scope": "The focus is on determining which of the given exoplanets has the highest density by applying the formula for density (density = mass/volume) and understanding how mass and radius affect volume.", "goal": "Identify the exoplanet with the highest density among the provided options."}, "summary": "To determine which exoplanet has the highest density, we need to calculate the density of each option using the formula density = mass/volume. The volume of a planet can be calculated using its radius, and since density is mass divided by volume, we can compare the densities of the planets based on their mass and size. The goal is to find out which of the four given planets has the highest density."}