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: which unit of length is affiliated with a measurement system whose mass units include hundredweight? 
Knowledge Triplets: Imperial unit system, measurement_unit.measurement_system.volume_units, Tablespoon
Mass, measurement_unit.dimension.units, Electron rest mass
hundredweight.noun.02, base.wordnet.synset.hypernym, avoirdupois unit.noun.01
Imperial unit system, measurement_unit.measurement_system.length_units, Yard
Imperial unit system, measurement_unit.measurement_system.volume_units, Gallon (Imperial)
Mass, measurement_unit.dimension.units, Milligram
Mass, measurement_unit.dimension.units, Dram
hundredweight.noun.03, base.wordnet.synset.word, m.07r8d56
Grain, measurement_unit.mass_unit.measurement_system, Imperial unit system
Imperial unit system, measurement_unit.measurement_system.length_units, Furlong
Mass, measurement_unit.dimension.units, Earth mass
Imperial unit system, user.avh.default_domain.ellerdale_topic.ellerdale_id, 0080-5e30
Mass, measurement_unit.dimension.units, Catty
Imperial unit system, measurement_unit.measurement_system.length_units, Foot
m.019h, type.permission.controls, m.0r0mpgz
Hundredweight, measurement_unit.mass_unit.weightmass_in_kilograms, 50.80234544
hundredweight.noun.03, base.wordnet.synset.word, m.07r8d62
Quart (Imperial), measurement_unit.volume_unit.measurement_system, Imperial unit system
Imperial unit system, measurement_unit.distance_unit.measurement_system, Yard
hundredweight.noun.02, base.wordnet.synset.syntactic_category, Noun
Thousandth of an inch, measurement_unit.distance_unit.measurement_system, Imperial unit system
Imperial unit system, user.movgp0.default_domain.measurement_system.unit_of_volume, Gallon (Imperial)
noun.quantity, base.wordnet.lexical_name.synsets, hundredweight.noun.02
Square mile, measurement_unit.area_unit.measurement_system, Imperial unit system
Imperial unit system, measurement_unit.measurement_system.area_units, Acre
Mass, measurement_unit.dimension.units, Microgram
hundredweight.noun.03, base.wordnet.synset.lexname, noun.quantity
hundredweight.noun.03, base.wordnet.synset.hypernym, avoirdupois unit.noun.01
m.07r8d62, base.wordnet.word_sense.sense, hundredweight.noun.03
m.07vn7ph, base.yupgrade.user.topics, Mass
Mass, measurement_unit.dimension.units, Troy pound
Imperial unit system, measurement_unit.measurement_system.weight_units, Pound
Mass, measurement_unit.dimension.units, Short ton
hundredweight.noun.01, base.wordnet.synset.hypernym, metric weight unit.noun.01
Hundredweight, measurement_unit.measurement_system.weight_units, Imperial unit system
m.07q77mt, base.wordnet.word_sense.sense, hundredweight.noun.01
m.0r0mpgz, dataworld.gardening_hint.last_referenced_by, Hundredweight
Mass, measurement_unit.dimension.units, Ounce
Imperial unit system, user.movgp0.default_domain.measurement_system.unit_of_volume, Fluid ounce (imperial)
hundredweight.noun.01, base.wordnet.synset.equivalent_topic, Hundredweight
hundredweight.noun.02, base.wordnet.synset.lexname, noun.quantity
Imperial unit system, user.movgp0.default_domain.measurement_system.unit_of_lenght, Mile
Yard, measurement_unit.distance_unit.measurement_system, Imperial unit system
Imperial unit system, measurement_unit.measurement_system.length_units, Chain
quarter.noun.08, base.wordnet.synset.part_holonym, hundredweight.noun.02
Imperial unit system, measurement_unit.measurement_system.length_units, Link
Mass, measurement_unit.dimension.units, Tael
Mass, measurement_unit.dimension.units, Carat
Imperial unit system, measurement_unit.measurement_system.length_units, Mile
mass.noun.01, base.wordnet.synset.equivalent_topic, Mass
Mass, base.skosbase.vocabulary_equivalent_topic.equivalent_concept, Mass (Physics)
Fathom, measurement_unit.distance_unit.measurement_system, Imperial unit system
Mass, measurement_unit.dimension.si_base_unit, Kilogram
metric weight unit.noun.01, base.wordnet.synset.hyponymy, hundredweight.noun.01
avoirdupois unit.noun.01, base.wordnet.synset.hyponymy, hundredweight.noun.03
m.07r8d56, base.wordnet.word_sense.sense, hundredweight.noun.03
hundredweight.noun.02, base.wordnet.synset.gloss, a United States unit of weight equivalent to 100 pounds
hundredweight.noun.03, base.wordnet.synset.equivalent_topic, Hundredweight
m.0qplrls, dataworld.gardening_hint.last_referenced_by, Mass
hundredweight.noun.01, base.wordnet.synset.word, m.07q77md
Imperial unit system, user.movgp0.default_domain.measurement_system.unit_of_lenght, Yard
Imperial unit system, user.movgp0.default_domain.measurement_system.unit_of_lenght, Foot
Imperial unit system, measurement_unit.measurement_system.volume_units, Bushel (Imperial)
Dram, measurement_unit.mass_unit.measurement_system, Imperial unit system
m.075_7gq, base.yupgrade.user.topics, Mass
m.07q77nm, base.wordnet.word_sense.sense, hundredweight.noun.01
quintal.noun.01, base.wordnet.synset.part_meronym, hundredweight.noun.01
noun.quantity, base.wordnet.lexical_name.synsets, hundredweight.noun.03
Hundredweight, measurement_unit.mass_unit.measurement_system, Imperial unit system
Imperial unit system, measurement_unit.measurement_system.weight_units, Long ton
hundredweight.noun.01, base.wordnet.synset.syntactic_category, Noun
hundredweight.noun.03, base.wordnet.synset.word, m.07r8d5g
Mass, measurement_unit.dimension.units, Pound
Imperial unit system, measurement_unit.distance_unit.measurement_system, Rod
Imperial unit system, user.movgp0.default_domain.measurement_system.unit_of_area, Square yard
Mass, measurement_unit.dimension.units, Atomic mass unit
Cable length, measurement_unit.distance_unit.measurement_system, Imperial unit system
Mass, base.ontologies.ontology_instance.equivalent_instances, m.07nfbgl
Mass, base.schemastaging.context_name.pronunciation, g.125_l6gm1
Imperial unit system, measurement_unit.distance_unit.measurement_system, League
Long ton, measurement_unit.mass_unit.measurement_system, Imperial unit system
Imperial unit system, measurement_unit.measurement_system.length_units, Inch
Mass, measurement_unit.dimension.units, Troy ounce
Mass, measurement_unit.dimension.units, Solar mass
League, measurement_unit.distance_unit.measurement_system, Imperial unit system
Inch, measurement_unit.distance_unit.measurement_system, Imperial unit system
hundredweight.noun.02, base.wordnet.synset.word, m.07rcr7c
Mass, measurement_unit.dimension.units, Cash
Imperial unit system, measurement_unit.measurement_system.volume_units, Quart (Imperial)
Tablespoon, measurement_unit.volume_unit.measurement_system, Imperial unit system
Mass, measurement_unit.dimension.units, Mace
Foot, measurement_unit.distance_unit.measurement_system, Imperial unit system
Imperial unit system, measurement_unit.measurement_system.weight_units, Grain
short ton.noun.01, base.wordnet.synset.part_meronym, hundredweight.noun.02
Mass, measurement_unit.dimension.units, Long quarter
Mass, measurement_unit.dimension.units, MeV/c²
Cup (Imperial), measurement_unit.volume_unit.measurement_system, Imperial unit system
m.07r8d5g, base.wordnet.word_sense.sense, hundredweight.noun.03
Imperial unit system, measurement_unit.measurement_system.volume_units, Cubic foot
Imperial unit system, measurement_unit.measurement_system.weight_units, Hundredweight
hundredweight.noun.03, base.wordnet.synset.gloss, a British unit of weight equivalent to 112 pounds
hundredweight.noun.01, base.wordnet.synset.word, m.07q77nm
hundredweight.noun.03, base.wordnet.synset.part_holonym, long ton.noun.01
Imperial unit system, measurement_unit.distance_unit.measurement_system, Chain
Imperial unit system, measurement_unit.distance_unit.measurement_system, Foot
hundredweight.noun.01, base.wordnet.synset.part_holonym, quintal.noun.01
hundredweight.noun.01, base.wordnet.synset.gloss, a unit of weight equal to 100 kilograms
m.07q77md, base.wordnet.word_sense.sense, hundredweight.noun.01
Imperial unit system, measurement_unit.measurement_system.weight_units, Stone
Mile, measurement_unit.distance_unit.measurement_system, Imperial unit system
quarter.noun.09, base.wordnet.synset.part_holonym, hundredweight.noun.03
Peck (Imperial), measurement_unit.volume_unit.measurement_system, Imperial unit system
Imperial unit system, measurement_unit.measurement_system.volume_units, Gill (Imperial)
Mass, measurement_unit.dimension.units, Hundredweight
m.07rcr6q, base.wordnet.word_sense.sense, hundredweight.noun.02
Mass, measurement_unit.dimension.units, Cental
Gallon (Imperial), measurement_unit.volume_unit.measurement_system, Imperial unit system
Mass, measurement_unit.dimension.units, Tonne
Rod, measurement_unit.distance_unit.measurement_system, Imperial unit system
hundredweight.noun.01, base.wordnet.synset.word, m.07q77mt
hundredweight.noun.03, base.wordnet.synset.syntactic_category, Noun
Mass, measurement_unit.dimension.units, Grain
Mass, measurement_unit.dimension.units, Planck mass
Poundal, measurement_unit.unit_of_force.measurement_system, Imperial unit system
Long quarter, measurement_unit.mass_unit.measurement_system, Imperial unit system
Imperial unit system, measurement_unit.measurement_system.length_units, Nautical mile
Imperial unit system, measurement_unit.measurement_system.weight_units, Dram
Mass, measurement_unit.dimension.units, Short quarter
centner.noun.02, base.wordnet.synset.part_holonym, hundredweight.noun.01
Fluid ounce (imperial), measurement_unit.volume_unit.measurement_system, Imperial unit system
Mass, measurement_unit.dimension.units, Gram
Ounce, measurement_unit.mass_unit.measurement_system, Imperial unit system
m.07rcr69, base.wordnet.word_sense.sense, hundredweight.noun.02
hundredweight.noun.02, base.wordnet.synset.word, m.07rcr69
Pound, measurement_unit.mass_unit.measurement_system, Imperial unit system
m.07rcr7c, base.wordnet.word_sense.sense, hundredweight.noun.02
Mass, measurement_unit.dimension.units, Stone
Imperial unit system, measurement_unit.measurement_system.area_units, Square mile
Imperial unit system, measurement_unit.measurement_system.volume_units, Cup (Imperial)
Square foot, measurement_unit.area_unit.measurement_system, Imperial unit system
Cubic foot, measurement_unit.volume_unit.measurement_system, Imperial unit system
hundredweight.noun.02, base.wordnet.synset.equivalent_topic, Hundredweight
Imperial unit system, measurement_unit.measurement_system.weight_units, Long quarter
m.07rcr6z, base.wordnet.word_sense.sense, hundredweight.noun.02
Imperial unit system, measurement_unit.distance_unit.measurement_system, Thousandth of an inch
Link, measurement_unit.distance_unit.measurement_system, Imperial unit system
Imperial unit system, measurement_unit.measurement_system.area_units, Square yard
avoirdupois unit.noun.01, base.wordnet.synset.hyponymy, hundredweight.noun.02
Pint (Imperial), measurement_unit.volume_unit.measurement_system, Imperial unit system
Imperial unit system, user.movgp0.default_domain.measurement_system.unit_of_mass, Ounce
hundredweight.noun.02, base.wordnet.synset.part_holonym, short ton.noun.01
noun.quantity, base.wordnet.lexical_name.synsets, hundredweight.noun.01
hundredweight.noun.02, base.wordnet.synset.part_meronym, quarter.noun.08
Imperial unit system, measurement_unit.measurement_system.temperature_units, Degree Fahrenheit
Chain, measurement_unit.distance_unit.measurement_system, Imperial unit system
Stone, measurement_unit.mass_unit.measurement_system, Imperial unit system
hundredweight.noun.02, base.wordnet.synset.word, m.07rcr6z
Mass, measurement_unit.dimension.units, Picul
Square yard, measurement_unit.area_unit.measurement_system, Imperial unit system
Mass, user.avh.default_domain.ellerdale_topic.ellerdale_id, 0080-0198
m.07rcr61, base.wordnet.word_sense.sense, hundredweight.noun.02
Ana Marie Cox, base.yupgrade.user.topics, Mass
m.07nfbgl, base.ontologies.ontology_instance_mapping.freebase_topic, Mass
Mass, measurement_unit.dimension.units, Pennyweight
hundredweight.noun.01, base.wordnet.synset.part_meronym, centner.noun.02
Imperial unit system, measurement_unit.measurement_system.length_units, Rod
Imperial unit system, user.movgp0.default_domain.measurement_system.unit_of_mass, Stone
hundredweight.noun.02, base.wordnet.synset.word, m.07rcr6q
Imperial unit system, measurement_unit.measurement_system.volume_units, Pint (Imperial)
Mass, measurement_unit.dimension.units, Kilogram
m.0tjyv_v, dataworld.gardening_hint.last_referenced_by, m.0r0mpgz
hundredweight.noun.01, base.wordnet.synset.word, m.07q77n6
hundredweight.noun.01, base.wordnet.synset.lexname, noun.quantity
Mass, measurement_unit.dimension.units, Jupiter mass
long ton.noun.01, base.wordnet.synset.part_meronym, hundredweight.noun.03
british imperial system.noun.01, base.wordnet.synset.equivalent_topic, Imperial unit system
Mass (Physics), base.skosbase.skos_concept.equivalent_topic, Mass
hundredweight.noun.02, base.wordnet.synset.word, m.07rcr61
Imperial unit system, measurement_unit.measurement_system.length_units, League
Imperial unit system, measurement_unit.measurement_system.length_units, Thousandth of an inch
Imperial unit system, measurement_unit.measurement_system.volume_units, Peck (Imperial)
m.0r0mpgz, type.object.permission, m.019h
hundredweight.noun.03, base.wordnet.synset.part_meronym, quarter.noun.09
Bushel (Imperial), measurement_unit.volume_unit.measurement_system, Imperial unit system
hundredweight.noun.02, base.wordnet.synset.word, m.07rcr7m
m.07rcr7m, base.wordnet.word_sense.sense, hundredweight.noun.02
Gill (Imperial), measurement_unit.volume_unit.measurement_system, Imperial unit system
m.0hn7rgm, dataworld.gardening_hint.last_referenced_by, Imperial unit system
Degree Fahrenheit, measurement_unit.temperature_unit.measurement_system, Imperial unit system
Imperial unit system, measurement_unit.measurement_system.length_units, Fathom
Imperial unit system, measurement_unit.measurement_system.weight_units, Ounce
Mass, measurement_unit.dimension.units, Long ton
Mass, measurement_unit.dimension.units, Candareen
Imperial unit system, measurement_unit.measurement_system.area_units, Square foot
Acre, measurement_unit.area_unit.measurement_system, Imperial unit system
Furlong, measurement_unit.distance_unit.measurement_system, Imperial unit system
Imperial unit system, measurement_unit.measurement_system.force_units, Poundal
Imperial unit system, user.movgp0.default_domain.measurement_system.unit_of_area, Acre
Imperial unit system, measurement_unit.measurement_system.length_units, Cable length
Nautical mile, measurement_unit.distance_unit.measurement_system, Imperial unit system
Wired, base.yupgrade.user.topics, Mass
Imperial unit system, user.movgp0.default_domain.measurement_system.unit_of_volume, Pint (Imperial)
Mass, measurement_unit.dimension.units, Planetary mass
Imperial unit system, user.movgp0.default_domain.measurement_system.unit_of_lenght, Inch
Imperial unit system, user.movgp0.default_domain.measurement_system.unit_of_mass, Long ton
Imperial unit system, user.movgp0.default_domain.measurement_system.unit_of_mass, Pound
m.07q77n6, base.wordnet.word_sense.sense, hundredweight.noun.01
Imperial unit system, measurement_unit.measurement_system.volume_units, Fluid ounce (imperial)

Answer: Mile
Foot
Inch
Fathom
Rod
Chain
Cable length
Nautical mile
Link
Yard
Furlong
League
Thousandth of an inch