Seven people A, B, C, D, E, F and G went to watch a movie. A is the only son of
B. B is the mother of
C. D is the grandmother of
A. E is the sister-in-law of
B. F is the daughter of E. G is the father of F. G said, “I will sit right next to my only niece”. If G doesn’t have any sibling, whom is he talking about?