38.
In a certain code language,
βA@ Bβ means βA is the husband of Bβ,
βA # Bβ means βA is the mother of Bβ,
βA & Bβ means βA is the daughter of Bβ,
βA $ Bβ means βA is the brother of Bβ.
Based on this, how is P related to M, if βM & N @ O # P $ Qβ?