In a certain language,
A & B means A is the wife of B,
A ÷ B means A is the daughter of B,
A × B means A is the son of B,
A + B means A is the sister of B and
A @ B means A is the father of B.
P & Q @ L + T & U @ V
Based on the above, how is Q related to V?
1
Sister
2
Mother's father
3
Mother
4
Father's mother