20.
In a certain code language,
βA + Bβ means βA is the mother of Bβ;
βA β Bβ means βA is the husband of Bβ;
βA Γ Bβ means βA is the father of Bβ and
βA Γ· Bβ means βA is the daughter of Bβ.
Based on the above, how is K related to O if βK Γ· L β M + N Γ Oβ?