The story ‘The Enemy’ is built on the pillars of selflessness, sense of duty, kindness and generosity. There have been many films and novels based on this theme. One such example is the film ‘My Name is Khan’, where the protagonist, with a sense of duty and generosity, goes to the flooded Georgia to save the lives of his friends, Mama Jenny, Joel and other natives. He selflessly works to save the town without thinking twice about the possible dangers to his own life.
A school is organizing a debate competition with participants as speakers and judges. $ S = \{S_1, S_2, S_3, S_4\} $ where $ S = \{S_1, S_2, S_3, S_4\} $ represents the set of speakers. The judges are represented by the set: $ J = \{J_1, J_2, J_3\} $ where $ J = \{J_1, J_2, J_3\} $ represents the set of judges. Each speaker can be assigned only one judge. Let $ R $ be a relation from set $ S $ to $ J $ defined as: $ R = \{(x, y) : \text{speaker } x \text{ is judged by judge } y, x \in S, y \in J\} $.