question: ruler:distance
choices.label: A B C D
choices.text: clock:time steel:hardness bullet:speed balance:weight
explanation: "distance" can be measured with a "ruler". "clocks" are used to show "time". it is a tool to measure "time". "steel" has the property of "hardness". it is not a tool to measure "hardness". "bullets" have a certain "speed". it is not a tool to measure "speed". a "weight" is a component of a "balance", which is not a tool for measuring "weights".
relation: ruler distance R3.3
relation: clock time R3.3
relation: steel hardness R3.1
relation: balance weight R2.3