question: earthquake:nuclear test
choices.label: A B C D
choices.text: natural disaster:man-made disaster syndicate:monopoly cold:bath disease:doctor
explanation: the "earthquake" may have been caused by a "nuclear test". "natural disasters" refer to catastrophes in nature, and "man-made disasters" refer to calamitys caused by human behavior . "natural disasters" are not caused by "man-made disasters". "syndicate" is an organizational form of "monopoly", and it is not caused by "monopoly". "cold" may be caused by a "bath". "doctors" can treat "diseases", which are not caused by "doctors".
relation: earthquake nuclear test R5.1
relation: natural disaster man-made disaster R2.4
relation: syndicate monopoly R3.10
relation: cold bath R5.1
relation: disease doctor R4.4