user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: centimetre–gram–second system of units has which unit of luminance within its system? 
Knowledge Triplets: Magnetic field, measurement_unit.dimension.units, Oersted
Centimetre–gram–second system of units, measurement_unit.measurement_system.acceleration_units, Gal
Barye, measurement_unit.pressure_unit.measurement_system, Centimetre–gram–second system of units
Centimetre–gram–second system of units, measurement_unit.measurement_system.energy_units, Erg
Centimetre–gram–second system of units, user.movgp0.default_domain.measurement_system.base_units, Second
Centimetre–gram–second system of units, user.movgp0.default_domain.measurement_system.base_units, Gram
Centimetre–gram–second system of units, measurement_unit.measurement_system.charge_units, Statcoulomb
Centimetre–gram–second system of units, measurement_unit.measurement_system.speed_units, Centimetre per second
Stilb, measurement_unit.luminance_unit.measurement_system, Centimetre–gram–second system of units
Energy, measurement_unit.dimension.units, Erg
Centimetre–gram–second system of units, user.movgp0.default_domain.measurement_system.unit_of_mass, Gram
Centimetre–gram–second system of units, measurement_unit.measurement_system.length_units, Centimeter
Gal, measurement_unit.acceleration_unit.acceleration_in_meters_per_second_squared, 0.01
Acceleration, measurement_unit.dimension.units, Gal
Centimetre per second, measurement_unit.speed_unit.measurement_system, Centimetre–gram–second system of units
Statcoulomb, measurement_unit.charge_unit.measurement_system, Centimetre–gram–second system of units
Gravitational metric system, measurement_unit.measurement_system.length_units, Centimeter
Centimetre–gram–second system of units, user.movgp0.default_domain.measurement_system.unit_of_time, Second
Density, measurement_unit.dimension.units, Gram per cubic centimetre
Centimetre–gram–second system of units, measurement_unit.measurement_system.current_units, Abampere
Magnetic flux density, measurement_unit.dimension.units, Gauss
Luminance, measurement_unit.dimension.units, Stilb
Centimetre–gram–second system of units, user.movgp0.default_domain.measurement_system.base_units, Kelvin
Gram per cubic centimetre, measurement_unit.unit_of_density.measurement_system, Centimetre–gram–second system of units
Temperature, measurement_unit.dimension.units, Kelvin
Length, measurement_unit.dimension.units, Centimeter
Centimetre–gram–second system of units, measurement_unit.measurement_system.luminance_units, Stilb
cgs.noun.01, base.wordnet.synset.equivalent_topic, Centimetre–gram–second system of units
m.0h7jk8x, dataworld.gardening_hint.last_referenced_by, Centimetre–gram–second system of units
Erg, measurement_unit.energy_unit.measurement_system, Centimetre–gram–second system of units
Abcoulomb, measurement_unit.charge_unit.measurement_system, Centimetre–gram–second system of units
Centimetre–gram–second system of units, user.movgp0.default_domain.measurement_system.unit_of_temperature, Kelvin
Centimetre–gram–second system of units, base.schemastaging.context_name.pronunciation, g.125_mqyp3
Abampere, measurement_unit.current_unit.measurement_system, Centimetre–gram–second system of units
Stilb, measurement_unit.luminance_unit.luminance_in_candelas_per_square_meter, 10000.0
Centimeter, measurement_unit.distance_unit.measurement_system, Centimetre–gram–second system of units
Centimetre–gram–second system of units, user.movgp0.default_domain.measurement_system.base_units, Centimeter
International System of Units, measurement_unit.measurement_system.length_units, Centimeter
Gram, measurement_unit.mass_unit.measurement_system, International System of Units
Centimetre–gram–second system of units, measurement_unit.measurement_system.charge_units, Abcoulomb
Electric current, measurement_unit.dimension.units, Abampere
Time, measurement_unit.dimension.units, Second
Electric charge, measurement_unit.dimension.units, Statcoulomb
Gal, measurement_unit.acceleration_unit.measurement_system, Centimetre–gram–second system of units
International System of Units, measurement_unit.measurement_system.time_units, Second
Centimetre–gram–second system of units, measurement_unit.measurement_system.magnetic_field_strength_units, Oersted
Centimetre–gram–second system of units, user.movgp0.default_domain.measurement_system.unit_of_lenght, Centimeter
International System of Units, measurement_unit.measurement_system.temperature_units, Kelvin
Centimetre–gram–second system of units, measurement_unit.measurement_system.magnetic_flux_density_units, Gauss
Electric charge, measurement_unit.dimension.units, Abcoulomb
Pressure, measurement_unit.dimension.units, Barye
Gauss, measurement_unit.magnetic_flux_density_unit.measurement_system, Centimetre–gram–second system of units
Centimetre–gram–second system of units, measurement_unit.measurement_system.density_units, Gram per cubic centimetre
Centimetre–gram–second system of units, measurement_unit.measurement_system.pressure_units, Barye
Speed, measurement_unit.dimension.units, Centimetre per second
Oersted, measurement_unit.magnetic_field_strength_unit.measurement_system, Centimetre–gram–second system of units

Answer: Stilb