[David] took her sister [Cindy] and brother [Joshua] with her to shop for her wedding dress. [Wayne] loves his mother [Cindy] very much.
('Wayne', 'Joshua')
[Wayne] loves his mother [Cindy] very much. [David] took her sister [Cindy] and brother [Joshua] with her to shop for her wedding dress.
[{('Wayne', 'uncle', 'Joshua'): [('Wayne', 'mother', 'Cindy'), ('Cindy', 'brother', 'Joshua')]}, {('Cindy', 'brother', 'Joshua'): [('Cindy', 'sister', 'David'), ('David', 'brother', 'Joshua')]}]
['mother', 'sister', 'brother']