Most Yoruba myths of origin can be found in the divination narratives knows at Odu Ifa. There are approximately 256 Odu Ifa, each of which contains a number of poems called ese Ifa. A typical ese Ifa is a narrative about a person or animal with a problem and the steps to resolve that problem. An ese Ifa explains the origins of Gelede as beginning with Yemoja, "The Mother of all the orisa and all living things." Yemoja could not have children and consulted an Ifa oracle, who advised her to offer sacrifices and to dance with wooden images on her head and metal anklets on her feet. After performing this ritual, she became pregnant. Her first child was a boy, nicknamed "Efe" (the humorist); the Efe mask emphasizes song and jests because of the personality of its namesake. Yemoja's second child was a girl, nicknamed "Gelede" because she was obese like her mother. Also like her mother, Gelede loved dancing.