question: toothbrush:toothpaste
choices.label: A B C D
choices.text: carriage:driver axe:trees pen:paper flame:temperature
explanation: "toothbrush" and "toothpaste" are both tooth brushing tools, and "toothbrush" and "toothpaste" are used together. "carriage" and "driver" are not a matched pair. an "axe" is a tool for cutting down "trees". the two are not matching tools. "pen" and "paper" are both tools for writing, and the two are used together. "flame" has "temperature", and the two are not matching tools.
relation: toothbrush toothpaste R3.10
relation: axe trees R3.10
relation: pen paper R3.10
relation: flame temperature R3.1