question: earth:mars:planet
choices.label: A B C D
choices.text: enterprise:manage:manager electric light:light:invention chen jingrun:hua luogeng:mathematician department:college:university
explanation: "earth" and "mars" belong to "planets". the "enterprise" needs an "manager" to "manage". "electric light" can emit "light". "chen jingrun" and "hua luogeng" are all "mathematician". "department" and "college" are part of the "university".
relation: earth mars R2.4
relation: electric light light R3.10
relation: chen jingrun hua luogeng R2.4
relation: chen jingrun hua luogeng mathematician R2.2
relation: college university R2.4