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: what is the measurement system that uses steradians as the unit of solid angle? 
Knowledge Triplets: International System of Units, measurement_unit.measurement_system.density_units, Kilogram per cubic metre
Angle in steradians, type.property.schema, Unit of Solid Angle
m.0r14qnr, dataworld.gardening_hint.last_referenced_by, Steradian
International System of Units, measurement_unit.measurement_system.force_units, Newton
International System of Units, measurement_unit.measurement_system.power_units, Milliwatt
International System of Units, measurement_unit.measurement_system.data_rate_units, Megabit per second
International System of Units, measurement_unit.measurement_system.radiance_units, Watt per square metre per steradian
Newton metre, measurement_unit.force_moment_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.weight_units, Microgram
Gram, measurement_unit.mass_unit.measurement_system, International System of Units
Joule per gram, measurement_unit.specific_energy_unit.measurement_system, International System of Units
zettasecond, measurement_unit.time_unit.measurement_system, International System of Units
yottasecond, measurement_unit.time_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.length_units, Millimeter
International System of Units, measurement_unit.measurement_system.molar_energy_units, Joule per mole
International System of Units, measurement_unit.measurement_system.electric_charge_density_units, Coulomb per cubic metre
Lux, measurement_unit.illuminance_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.power_units, Watt
Gray, measurement_unit.absorbed_dose_unit.measurement_system, International System of Units
Joule per cubic metre per kelvin, measurement_unit.volumetric_heat_capacity_unit.measurement_system, International System of Units
Reciprocal metre, measurement_unit.wavenumber_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.dose_equivalence_units, Sievert
Megawatt, measurement_unit.power_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.electric_flux_density_units, Coulomb per square metre
International System of Units, measurement_unit.measurement_system.angular_velocity_units, Radian per second
Hectoliter, measurement_unit.volume_unit.measurement_system, International System of Units
m.07qxqkt, base.wordnet.word_sense.sense, steradian.noun.01
International System of Units, measurement_unit.measurement_system.volume_units, Deciliter
Microgram, measurement_unit.mass_unit.measurement_system, International System of Units
Becquerel, measurement_unit.radioactivity_unit.measurement_system, International System of Units
Cubic metre per second, measurement_unit.unit_of_volumetric_flow_rate.measurement_system, International System of Units
Watt per square metre per steradian, measurement_unit.radiance_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.frequency_units, Megahertz
Joule per mole per kelvin, measurement_unit.molar_heat_capacity_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.radioactivity_units, Becquerel
Sievert, measurement_unit.dose_equivalence_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.length_units, Decimetre
International System of Units, measurement_unit.measurement_system.molar_volume_units, Cubic metre per mole
International System of Units, measurement_unit.measurement_system.volume_units, Cubic kilometer
International System of Units, measurement_unit.measurement_system.specific_heat_capacity_units, Joule per gram per kelvin
Nanometre, measurement_unit.distance_unit.measurement_system, International System of Units
Kilometer, measurement_unit.distance_unit.measurement_system, International System of Units
Candela per square metre, measurement_unit.luminance_unit.measurement_system, International System of Units
Angle in steradians, type.property.unique, true
Centimeter, measurement_unit.distance_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.time_units, Millisecond
International System of Units, measurement_unit.measurement_system.solid_angle_units, Steradian
International System of Units, measurement_unit.measurement_system.surface_density_units, Kilogram per square metre
Gray per second, measurement_unit.absorbed_dose_rate_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.conductance_units, Microsiemens
Kilometres per second, measurement_unit.speed_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.temperature_units, Degree Celsius
Micromolar, measurement_unit.amount_concentration_unit.measurement_system, International System of Units
Coulomb per cubic metre, measurement_unit.electric_charge_density_unit.measurement_system, International System of Units
Ohm meter, measurement_unit.unit_of_resistivity.measurement_system, International System of Units
Joule per gram per kelvin, measurement_unit.specific_heat_capacity_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.weight_units, Tonne
International System of Units, measurement_unit.measurement_system.time_units, Second
International System of Units, measurement_unit.measurement_system.time_units, Gigasecond
Megahertz, measurement_unit.unit_of_frequency.measurement_system, International System of Units
Kilowatt, measurement_unit.power_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.frequency_units, Hertz
International System of Units, measurement_unit.measurement_system.data_rate_units, Kilobit per second
Farad, measurement_unit.capacitance_unit.measurement_system, International System of Units
sphere.noun.06, base.wordnet.synset.part_meronym, steradian.noun.01
International System of Units, measurement_unit.measurement_system.potential_units, Volt
Coulomb, measurement_unit.charge_unit.measurement_system, International System of Units
Siemens per meter, measurement_unit.unit_of_conductivity.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.inverse_temperature_units, micro per degree C
International System of Units, measurement_unit.measurement_system.length_units, Hectometre
Estelle, base.yupgrade.user.topics, International System of Units
Ohm, measurement_unit.resistance_unit.measurement_system, International System of Units
Gigabit per second, measurement_unit.unit_of_data_transmission_rate.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.time_units, hectosecond
International System of Units, measurement_unit.measurement_system.magnetic_field_strength_units, Ampere per metre
steradian.noun.01, base.wordnet.synset.part_holonym, sphere.noun.06
International System of Units, measurement_unit.measurement_system.specific_energy_units, Joule per gram
International System of Units, measurement_unit.measurement_system.length_units, Decametre
Kilohertz, measurement_unit.unit_of_frequency.measurement_system, International System of Units
Deciliter, measurement_unit.volume_unit.measurement_system, International System of Units
Liter, measurement_unit.volume_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.specific_volume_units, Cubic metre per kilogram
Microsiemens per centimeter, measurement_unit.unit_of_conductivity.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.time_units, decisecond
International System of Units, measurement_unit.measurement_system.volume_units, Cubic metre
Kilojoule, measurement_unit.energy_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.pressure_units, Megapascal
Kilobit per second, measurement_unit.unit_of_data_transmission_rate.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.time_units, Megasecond
International System of Units, measurement_unit.measurement_system.speed_units, Kilometres per hour
Watt per steradian, measurement_unit.radiant_intensity_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.time_units, yoctosecond
Centisecond, measurement_unit.time_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.pressure_units, Kilopascal
International System of Units, measurement_unit.measurement_system.wavenumber_units, Reciprocal metre
zeptosecond, measurement_unit.time_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.absorbed_dose_rate_units, Gray per second
International System of Units, measurement_unit.measurement_system.angle_units, Radian
Watt, measurement_unit.power_unit.measurement_system, International System of Units
Pascal, measurement_unit.pressure_unit.measurement_system, International System of Units
Katal per cubic metre, measurement_unit.catalytic_concentration_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.energy_units, Kilojoule
International System of Units, measurement_unit.measurement_system.time_units, petasecond
Mole per cubic metre, measurement_unit.amount_concentration_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.length_units, Micrometer
International System of Units, measurement_unit.measurement_system.length_units, Picometre
International System of Units, measurement_unit.measurement_system.luminance_units, Candela per square metre
International System of Units, measurement_unit.measurement_system.catalytic_concentration_units, Katal per cubic metre
Volt per metre, measurement_unit.electric_field_strength_unit.measurement_system, International System of Units
Henry per metre, measurement_unit.permeability_unit.measurement_system, International System of Units
Milliwatt, measurement_unit.power_unit.measurement_system, International System of Units
Gigasecond, measurement_unit.time_unit.measurement_system, International System of Units
Millisiemens, measurement_unit.conductance_unit.measurement_system, International System of Units
steradian.noun.01, base.wordnet.synset.hypernym, angular unit.noun.01
m.0tryddq, dataworld.gardening_hint.last_referenced_by, m.0r14qnr
International System of Units, measurement_unit.measurement_system.time_units, Femtosecond
International System of Units, measurement_unit.measurement_system.frequency_units, Gigahertz
International System of Units, measurement_unit.measurement_system.volume_units, Liter
International System of Units, measurement_unit.measurement_system.illuminance_units, Lux
Cubic metre per mole, measurement_unit.molar_volume_unit.measurement_system, International System of Units
Nanomolar, measurement_unit.amount_concentration_unit.measurement_system, International System of Units
Cubic kilometer, measurement_unit.volume_unit.measurement_system, International System of Units
Second, measurement_unit.time_unit.measurement_system, International System of Units
Megabit per second, measurement_unit.unit_of_data_transmission_rate.measurement_system, International System of Units
Solid angle, user.avh.default_domain.ellerdale_topic.ellerdale_id, 009a-52ae
angular unit.noun.01, base.wordnet.synset.hyponymy, steradian.noun.01
International System of Units, measurement_unit.measurement_system.electric_field_strength_units, Volt per metre
International System of Units, measurement_unit.measurement_system.molar_energy_units, Kilojoule per mole
International System of Units, measurement_unit.measurement_system.time_units, Microsecond
Radian per second squared, measurement_unit.angular_acceleration_unit.measurement_system, International System of Units
Kilogram per square metre, measurement_unit.unit_of_surface_density.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.molar_heat_capacity_units, Joule per mole per kelvin
Cubic metre, measurement_unit.volume_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.current_units, Ampere
decasecond, measurement_unit.time_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.volumetric_heat_capacity_units, Joule per cubic metre per kelvin
Kilojoule per mole, measurement_unit.molar_energy_unit.measurement_system, International System of Units
Ampere per metre, measurement_unit.magnetic_field_strength_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.heat_capacity_units, Joule per kelvin
International System of Units, measurement_unit.measurement_system.inverse_temperature_units, Inverse Kelvin
Ohm centimeter, measurement_unit.unit_of_resistivity.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.substance_units, Mole
International System of Units, measurement_unit.measurement_system.energy_density_units, Joule per cubic metre
Kilosecond, measurement_unit.time_unit.measurement_system, International System of Units
Micrometer, measurement_unit.distance_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.permittivity_units, Farad per metre
m.0r14qnr, type.object.permission, m.019h
International System of Units, measurement_unit.measurement_system.time_units, Nanosecond
International System of Units, measurement_unit.measurement_system.length_units, Centimeter
International System of Units, measurement_unit.measurement_system.area_units, Square kilometer
Metre per second, measurement_unit.speed_unit.measurement_system, International System of Units
decisecond, measurement_unit.time_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.amount_concentration_units, Nanomolar
steradian.noun.01, base.wordnet.synset.equivalent_topic, Steradian
Ampere, measurement_unit.current_unit.measurement_system, International System of Units
Coulomb per kilogram, measurement_unit.exposure_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.conductance_units, Millisiemens
Siemens, measurement_unit.conductance_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.charge_units, Coulomb
Megasecond, measurement_unit.time_unit.measurement_system, International System of Units
Joule per kilogram per kelvin, measurement_unit.specific_heat_capacity_unit.measurement_system, International System of Units
petasecond, measurement_unit.time_unit.measurement_system, International System of Units
Millisecond, measurement_unit.time_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.weight_units, Kilogram
International System of Units, measurement_unit.measurement_system.volumetric_flow_rate_units, Cubic metre per second
Joule per kelvin, measurement_unit.heat_capacity_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.luminous_intensity_units, Candela
Solid angle, measurement_unit.dimension.units, Steradian
Kilogram, measurement_unit.mass_unit.measurement_system, International System of Units
Steradian, measurement_unit.solid_angle_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.time_units, zeptosecond
Joule per cubic metre, measurement_unit.energy_density_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.time_units, zettasecond
Henry, measurement_unit.inductance_unit.measurement_system, International System of Units
Mole, measurement_unit.substance_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.pressure_units, Gigapascal
Millimeter, measurement_unit.distance_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.amount_concentration_units, Micromolar
International System of Units, measurement_unit.measurement_system.length_units, Kilometer
International System of Units, measurement_unit.measurement_system.inductance_units, Henry
International System of Units, measurement_unit.measurement_system.time_units, yottasecond
Milliliter, measurement_unit.volume_unit.measurement_system, International System of Units
micro per degree C, measurement_unit.inverse_temperature_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.magnetic_flux_units, Weber
International System of Units, measurement_unit.measurement_system.acceleration_units, Metre per second squared
Volt, measurement_unit.potential_unit.measurement_system, International System of Units
Microsecond, measurement_unit.time_unit.measurement_system, International System of Units
Tonne, measurement_unit.mass_unit.measurement_system, International System of Units
Gigahertz, measurement_unit.unit_of_frequency.measurement_system, International System of Units
Newton per metre, measurement_unit.surface_tension_unit.measurement_system, International System of Units
Joule, measurement_unit.energy_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.amount_concentration_units, Molar
International System of Units, measurement_unit.measurement_system.data_rate_units, Terabit per second
solid angle.noun.01, base.wordnet.synset.equivalent_topic, Solid angle
Katal, measurement_unit.catalytic_activity_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.magnetic_flux_density_units, Tesla
International System of Units, measurement_unit.measurement_system.amount_concentration_units, Mole per cubic metre
Solid angle, measurement_unit.dimension.units, Square degree
Kilogram per cubic metre, measurement_unit.unit_of_density.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.time_units, Centisecond
Hertz, measurement_unit.unit_of_frequency.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.power_units, Megawatt
International System of Units, measurement_unit.measurement_system.time_units, decasecond
Candela, measurement_unit.luminous_intensity_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.time_units, exasecond
International System of Units, measurement_unit.measurement_system.absorbed_dose_units, Gray
International System of Units, measurement_unit.measurement_system.angular_acceleration_units, Radian per second squared
Floating Point Number, type.type.expected_by, Angle in steradians
Molar, measurement_unit.amount_concentration_unit.measurement_system, International System of Units
Gigapascal, measurement_unit.pressure_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.speed_units, Kilometres per second
yoctosecond, measurement_unit.time_unit.measurement_system, International System of Units
Terabit per second, measurement_unit.unit_of_data_transmission_rate.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.weight_units, Milligram
Newton, measurement_unit.unit_of_force.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.weight_units, Gram
Meter, measurement_unit.distance_unit.measurement_system, International System of Units
m.0qrbg_1, dataworld.gardening_hint.last_referenced_by, International System of Units
International System of Units, measurement_unit.measurement_system.time_units, Attosecond
Coulomb per square metre, measurement_unit.electric_flux_density_unit.measurement_system, International System of Units
noun.quantity, base.wordnet.lexical_name.synsets, steradian.noun.01
International System of Units, measurement_unit.measurement_system.length_units, Megametre
Joule per kilogram, measurement_unit.specific_energy_unit.measurement_system, International System of Units
Farad per metre, measurement_unit.permittivity_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.volume_units, Centiliter
m.014_, type.permission.controls, Angle in steradians
Angle in steradians, type.property.unit, Steradian
Pascal second, measurement_unit.viscosity_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.volume_units, Milliliter
International System of Units, measurement_unit.measurement_system.force_moment_units, Newton metre
International System of Units, measurement_unit.measurement_system.length_units, Nanometre
International System of Units, measurement_unit.measurement_system.temperature_units, Kelvin
International System of Units, measurement_unit.measurement_system.resistance_units, Ohm
m.019h, type.permission.controls, m.0r14qnr
International System of Units, measurement_unit.measurement_system.specific_energy_units, Joule per kilogram
Inverse Kelvin, measurement_unit.inverse_temperature_unit.measurement_system, International System of Units
Megapascal, measurement_unit.pressure_unit.measurement_system, International System of Units
Solid angle, measurement_unit.dimension.si_base_unit, Steradian
Microsiemens, measurement_unit.conductance_unit.measurement_system, International System of Units
Solid angle, base.schemastaging.context_name.pronunciation, g.125_rt7t7
International System of Units, user.avh.default_domain.ellerdale_topic.ellerdale_id, 0080-5e5f
Kilometres per hour, measurement_unit.speed_unit.measurement_system, International System of Units
Decimetre, measurement_unit.distance_unit.measurement_system, International System of Units
bit per second, measurement_unit.unit_of_data_transmission_rate.measurement_system, International System of Units
steradian.noun.01, base.wordnet.synset.word, m.07qxqkd
International System of Units, measurement_unit.measurement_system.power_units, Kilowatt
International System of Units, measurement_unit.measurement_system.surface_tension_units, Newton per metre
International System of Units, measurement_unit.measurement_system.frequency_units, Kilohertz
Ampere per square metre, measurement_unit.current_density_unit.measurement_system, International System of Units
steradian.noun.01, base.wordnet.synset.gloss, the unit of solid angle adopted under the Systeme International d'Unites
Picometre, measurement_unit.distance_unit.measurement_system, International System of Units
Radian per second, measurement_unit.angular_velocity_unit.measurement_system, International System of Units
Joule per mole, measurement_unit.molar_energy_unit.measurement_system, International System of Units
Steradian, user.avh.default_domain.ellerdale_topic.ellerdale_id, 0080-a7f6
International System of Units, measurement_unit.measurement_system.resistivity_units, Ohm centimeter
Centiliter, measurement_unit.volume_unit.measurement_system, International System of Units
Square kilometer, measurement_unit.area_unit.measurement_system, International System of Units
Watt per meter per kelvin, measurement_unit.thermal_conductivity_unit.measurement_system, International System of Units
Steradian, measurement_unit.solid_angle_unit.angle_in_steradians, 1.0
Metre per second squared, measurement_unit.acceleration_unit.measurement_system, International System of Units
Radian, measurement_unit.angle_unit.measurement_system, International System of Units
Unit of Solid Angle, type.type.properties, Angle in steradians
International System of Units, measurement_unit.measurement_system.thermal_conductivity_units, Watt per meter per kelvin
International System of Units, measurement_unit.measurement_system.viscosity_units, Pascal second
Angle in steradians, type.object.permission, m.014_
International System of Units, measurement_unit.measurement_system.exposure_units, Coulomb per kilogram
International System of Units, measurement_unit.measurement_system.capacitance_units, Farad
International System of Units, measurement_unit.measurement_system.data_rate_units, Gigabit per second
International System of Units, measurement_unit.measurement_system.time_units, Kilosecond
International System of Units, measurement_unit.measurement_system.time_units, Picosecond
m.07qxqkd, base.wordnet.word_sense.sense, steradian.noun.01
Attosecond, measurement_unit.time_unit.measurement_system, International System of Units
Hectometre, measurement_unit.distance_unit.measurement_system, International System of Units
Picosecond, measurement_unit.time_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.data_rate_units, bit per second
International System of Units, measurement_unit.measurement_system.current_density_units, Ampere per square metre
International System of Units, measurement_unit.measurement_system.area_units, Square meter
Weber, measurement_unit.magnetic_flux_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.radiant_intensity_units, Watt per steradian
International System of Units, measurement_unit.measurement_system.specific_heat_capacity_units, Joule per kilogram per kelvin
Kilopascal, measurement_unit.pressure_unit.measurement_system, International System of Units
terasecond, measurement_unit.time_unit.measurement_system, International System of Units
Tesla, measurement_unit.magnetic_flux_density_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.speed_units, Metre per second
International System of Units, base.schemastaging.context_name.pronunciation, g.125_p8yyr
International System of Units, measurement_unit.measurement_system.energy_units, Joule
International System of Units, measurement_unit.measurement_system.irradiance_units, Watt per square metre
International System of Units, measurement_unit.measurement_system.catalytic_activity_units, Katal
hectosecond, measurement_unit.time_unit.measurement_system, International System of Units
steradian.noun.01, base.wordnet.synset.word, m.07qxqkt
International System of Units, measurement_unit.measurement_system.permeability_units, Henry per metre
Milligram, measurement_unit.mass_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.volume_units, Hectoliter
Kelvin, measurement_unit.temperature_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.resistivity_units, Ohm meter
International System of Units, measurement_unit.measurement_system.time_units, terasecond
International System of Units, measurement_unit.measurement_system.length_units, Meter
Degree Celsius, measurement_unit.temperature_unit.measurement_system, International System of Units
Lumen, measurement_unit.luminous_flux_unit.measurement_system, International System of Units
steradian.noun.01, base.wordnet.synset.syntactic_category, Noun
Megametre, measurement_unit.distance_unit.measurement_system, International System of Units
steradian.noun.01, base.wordnet.synset.lexname, noun.quantity
Square meter, measurement_unit.area_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.conductance_units, Siemens
Angle in steradians, type.property.expected_type, Floating Point Number
Femtosecond, measurement_unit.time_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.pressure_units, Pascal
Nanosecond, measurement_unit.time_unit.measurement_system, International System of Units
Decametre, measurement_unit.distance_unit.measurement_system, International System of Units
Cubic metre per kilogram, measurement_unit.specific_volume_unit.measurement_system, International System of Units
Watt per square metre, measurement_unit.irradiance_unit.measurement_system, International System of Units
International System of Units, measurement_unit.measurement_system.luminous_flux_units, Lumen
exasecond, measurement_unit.time_unit.measurement_system, International System of Units

Answer: International System of Units