There are eight persons A, B, C, D, E, F, G, and H comprising three married couples and two pairs of siblings. It is known that: (i) D's father-in-law is E and F's son-in-law is G. (ii) Members in each pair of siblings are of different genders. (iii) A's mother H likes B, the daughter of C and E. (iv) A is B's sister-in-law and two of the three married couples have two children each. How is D related to B?

In a certain code language: 'A + B' means 'A is the daughter of B', 'A - B' means 'A is the brother of B', 'A x B' means 'A is the wife of B', 'A % B' means 'A is the father of B'. If 'Kartik + Vijay - Yash % Shreya x Rohan', how is Kartik related to Rohan?

In a certain code language: E + F means 'E is the husband of F' E - F means 'E is the mother of F' E × F means 'E is the wife of F' E ÷ F means 'E is the father of F' How is P related to T in the expression 'P × Q ÷ R - S + T'?