If X - Y means X is the sister of Y, X + Y means X is the brother of Y, and X × Y means X is the father of Y, what is the relationship of Z if X - Y × Z?

A. Z IS X'S DAUGHTER

In a coded relation, if M + N means M is the uncle of N, M - N means M is the aunt of N, and M × N means M is the brother of N, what is the relationship of O if M + N × O?

A. O IS M'S NEPHEW

If D is the daughter of E and E is the sister of F, what is the relationship of D to F?

A. NIECE

If G is the son of H and H is the mother of I, what is the relationship of G to I?

A. BROTHER

If J is the aunt of K and K is the son of L, what is the relationship of J to L?

A. SISTER-IN-LAW