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: romanian units of measurement is the unit of length in what? 
Knowledge Triplets: English units, measurement_unit.measurement_system.length_units, League
Obsolete Russian units of measurement, measurement_unit.measurement_system.length_units, Cubit
Digit, measurement_unit.distance_unit.measurement_system, English units
League, measurement_unit.distance_unit.measurement_system, Spanish customary units
Length, measurement_unit.dimension.units, Palm
Length, measurement_unit.dimension.units, Cubit
Palm, measurement_unit.distance_unit.measurement_system, English units
Imperial unit system, measurement_unit.measurement_system.length_units, League
English units, measurement_unit.measurement_system.length_units, Palm
Romanian units of measurement, measurement_unit.measurement_system.length_units, Digit
League, measurement_unit.distance_unit.measurement_system, English units
Cubit, user.avh.default_domain.ellerdale_topic.ellerdale_id, 009a-b0bd
Cubit, measurement_unit.distance_unit.measurement_system, Obsolete Russian units of measurement
m.0h7kn36, dataworld.gardening_hint.last_referenced_by, Palm
cubit.noun.01, base.wordnet.synset.equivalent_topic, Cubit
English units, measurement_unit.measurement_system.length_units, Digit
palm.noun.02, base.wordnet.synset.equivalent_topic, Palm
m.0szzsp0, dataworld.gardening_hint.last_referenced_by, Cubit
Digit, measurement_unit.distance_unit.measurement_system, Romanian units of measurement
Palm, measurement_unit.distance_unit.measurement_system, Romanian units of measurement
Romanian units of measurement, measurement_unit.measurement_system.length_units, Cubit
English units, measurement_unit.measurement_system.length_units, Cubit
Digit, measurement_unit.distance_unit.distance_in_meters, 0.01905
Romanian units of measurement, measurement_unit.measurement_system.length_units, League
Spanish customary units, measurement_unit.measurement_system.length_units, League
Romanian units of measurement, measurement_unit.measurement_system.length_units, Palm
Cubit, measurement_unit.distance_unit.measurement_system, Romanian units of measurement
Cubit, measurement_unit.distance_unit.measurement_system, English units
League, measurement_unit.distance_unit.measurement_system, Imperial unit system
Palm, measurement_unit.distance_unit.measurement_system, Dutch units of measurement
Palm, measurement_unit.distance_unit.distance_in_meters, 0.0762
Length, measurement_unit.dimension.units, Digit
Dutch units of measurement, measurement_unit.measurement_system.length_units, Palm
Length, measurement_unit.dimension.units, League
League, measurement_unit.distance_unit.measurement_system, Romanian units of measurement

Answer: Cubit
Digit
Palm
League