J $ K means J is the father of K;
J # K means J is the sister of K;
J * K means J is the daughter of K and
J @ K means J is the brother of K.
Which of the following indicates that M is the wife of Q?
Q $ R @ T * M
Q $ R → Q is the father of R
R @ T → R is the brother of T
Hence, → Q is the father of T
T * M → T is the daughter of M
Hence, → M is the mother of T
Hence, M is the wife of Q.