question: spring scale:kilogram:mass
choices.label: A B C D
choices.text: thermometer:celsius:temperature ruler:square meter:area watch:light year:time exam:score:grade
explanation: "spring scale" is a tool for measuring "mass", "kilogram" is a unit of "mass", and "spring scale" corresponds to "mass" and "kilogram". "thermometer" is a tool for measuring "temperature", "celsius" is a unit of "temperature", and "thermometer" corresponds to "temperature" corresponds to "celsius", which is inconsistent with the query. a "ruler" is a tool for measuring length, not "area", which is a "square meter". "watch" is a tool for measuring "time", but "light year" is a unit of length, which has no obvious logical relationship with "time". "exam" is not a measurement tool, "score" corresponds to "grade".
relation: spring scale mass kilogram R3.10
relation: thermometer temperature celsius R3.10
relation: watch time R3.8