earth is greater in mass than mars
earth is bigger_than_on. gravity_on_mars is less_than_of_earth. earth is larger_than_moon. sun is larger_than_earth. gravity_on_mars is not less_than_of_earth. mars is not planet_just_like_earth. mars_gravity is weaker_than_earths. star has much_more_mass_than_planet mars_gravity is not weaker_than_earths. mars is planet_just_like_earth.