21.
In a certain code language,
X + Y means βX is the sister of Yβ,
X β Y means βX is the son of Yβ,
X Γ Y means βX is the husband of Yβ,
X Γ· Y means βX is the mother of Yβ.
Based on the above, how is T related to X if βT + U β V Γ W Γ· Xβ?