Human Activities: Cyc knows about thousands of types of human activities. Here are a few of the facets (or organizing properties) by which human activities are distinguished:

• number of doers - single-doer activity, multi-doer activity (e.g. two-doer, group)
• thing acted on - inanimate object, animal (e.g. human), organization
• effect - human creation activity, human destruction activity
• thing used - human using a device, human using an animal