Among intellectual legacy which the "adat" inherited to Indonesians is a set of myths of origin of creation. The myths are sung (and only recently written) in important ceremonies held on special occasions of birth, death, marriage, harvest festival, and so on. The Dayak-Benuaq tribe of East Kalimantan, for example, has a set of myths known as "Temputn". This "Temputn" tells myths of origin of universe, world and sky, human and animal creation, plants, water, fire, rain, death, ancestor origin, and some social taboos (Michael Hopes & Karaakng 1997:1-19). According to "Temputn", far before humankind had been created, they were two families who inhabited the sky. Of the raw materials used by the ‘sky families’ to create the earth and the sky, finally the first human came into being. He was married to a woman, who was his own daughter, and had many children, some of whom later became "seniangs"—group of spirits who live in the heavens, responsible for the policing of the most important moral affairs and they are in charge of "adat" guardians. The "seniangs" can inflict punishments (curses) on the ‘incestuous’. Their children were not only the human race and spirits, but also animals like wildcats of the forest, bears, ancestor of deer, the pigs of the forest, forefathers of monkey, ancestor of bees, snakes, and many others (Michael Hopes & Karaakng 1997:29-41).