Comprehension Passage
Direction: Study the given information and answer the questions below:
In a family of three generation there are seven members - W, S, P, D, E, I, and N. N is the mother of three children. S is the paternal aunt of P. E is the mother of P, who is the grandson of N. E has no siblings. N has one brother. D is the only brother of W. P is the nephew of W, who is the niece of I.
Four among the following five are alike in certain way thus form a group. Which of the following does not belong to the group?
1
W - D
2
I - N
3
S - P
4
W - N
5
I - S