Directions: Read the following statements and answer the questions given below:

A is the Father of B, but B is not his son. C is the daughter of B. D is the wife of A. E is the brother of B. H is the son of E, F is the wife of E, G is the father of F.

Question: Who is the Sister in law of B?

To solve blood relation problems like this, it is helpful to map out the family tree using standard symbols (e.g., squares/circles for gender and horizontal/vertical lines for relationships).