Bill Jill Sarah Sam Ana Jan Smith Use queries to find out: Who is Ana's grandparent? Who is Jill's sibling? Who is Sarah's cousin? If multiple answers exist, make sure to get all of them Activity 6. Write a Prolog definition of the greatest common divisor of two numbers. Then use it to compute gcd(4, 10), gcd(15, 36), and ged(25, 55). Activity 7. Write a Prolog program to find the last item in a list