[Lionel] and his father [Matthew] went jogging by the lake. [John] and his father [Scott] went to the golf course in town on Saturday and had a great time. [Lionel] and his grandfather [Scott] like to play chess together.
('Matthew', 'John')
[Lionel] and his father [Matthew] went jogging by the lake. [Lionel] and his grandfather [Scott] like to play chess together. [John] and his father [Scott] went to the golf course in town on Saturday and had a great time.
[{('Matthew', 'brother', 'John'): [('Matthew', 'father', 'Scott'), ('Scott', 'son', 'John')]}, {('Matthew', 'father', 'Scott'): [('Matthew', 'son', 'Lionel'), ('Lionel', 'grandfather', 'Scott')]}]