Why I Am Not a Christian Bale” 8. This work proposes a quadrilateral scheme of articulation, attribution, designation, and derivation that form the underlying structure of yam agriculture and the “week of peace”. This work analyzes the values that cause the murder of Ikemefuna as part of the episteme of Umuofian culture. This work opens with a reading of gaze in a Velasquez painting of Okonkwo. For 10 points, name this philosophical work by Chinua Foucault, which discusses ways of structuring knowledge of Nigerian literature.