question: x-ray:fracture
choices.label: A B C D
choices.text: satellite cloud image:rainfall popular science books:knowledge electronic navigation:routes eating habits:healthy
explanation: "x-rays" are the basis for judging whether "fractures". the "satellite cloud image" is the basis for judging whether there will be "rainfall". "popular science books" are tools for learning "knowledge", not the basis for judging "knowledge". "electronic navigation" is a tool for viewing the "route", not the basis for judging the "route". "eating habits" can affect "health", not the basis for judging whether it is "healthy".
relation: x-ray fracture R3.10
relation: satellite cloud image rainfall R3.10