. . . . . "stable" . "Event" . . . . _:vb50845115 . . _:vb50845116 . "\n\t\tAn arbitrary classification of a space/time region, by a \n\t\tcognitive agent. An event may have actively participating agents,\n\t\tpassive factors, products, and a location in space/time.\n\t\t" . . .