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Write the following rules in Prolog  1. “Married” is a mutual relationship 2. The mother of one’s mother is his/her grandmother

Write the following rules in Prolog  1. “Married” is a mutual relationship 2. The mother of one’s mother is his/her grandmother

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Write the following rules in Prolog 
1. “Married” is a mutual relationship
2. The mother of one’s mother is his/her grandmother

Consider the following relations definition, facts, and rules in Prolog: Relations definition: married (X, Y): X is married to Y where Y is the husband parents (X, Y, Z): Y and Z are parents of X mother (X, Y): Y is mother of X brother (W, Z): Z is brother of W Facts: parents(william. diana, charles). parents(henry, diana charles). parents(charles. elizabeth, philip). parents(diana, frances, edward). parents(anne, elizabeth, philip). parents(andrew, elizabeth, philip). parents(edwardw. elizabeth, philip). female(diana). female(elizabeth). wwwww w ndu female(frances). male(william). male(henry). male(charles). male(andrew). male(edwardW). married(diana, charles). married(elizabeth, philip). married(frances, edward). married(anne, mark). wwwwn Rules: mother(X, Y) :- parents(X, Y, Z), female(Y). brother(W, Z) :- parents(W, X, Y), parents(Z, X, Y), male(Z).
Transcribed Image Text:Consider the following relations definition, facts, and rules in Prolog: Relations definition: married (X, Y): X is married to Y where Y is the husband parents (X, Y, Z): Y and Z are parents of X mother (X, Y): Y is mother of X brother (W, Z): Z is brother of W Facts: parents(william. diana, charles). parents(henry, diana charles). parents(charles. elizabeth, philip). parents(diana, frances, edward). parents(anne, elizabeth, philip). parents(andrew, elizabeth, philip). parents(edwardw. elizabeth, philip). female(diana). female(elizabeth). wwwww w ndu female(frances). male(william). male(henry). male(charles). male(andrew). male(edwardW). married(diana, charles). married(elizabeth, philip). married(frances, edward). married(anne, mark). wwwwn Rules: mother(X, Y) :- parents(X, Y, Z), female(Y). brother(W, Z) :- parents(W, X, Y), parents(Z, X, Y), male(Z).
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