[Luis] wanted to buy his sister a birthday gift but her son [David] said she did n't want any gifts. [Emily] was eager to spend time with her son, [David]. [Luis] and his son [Marvin] went to look at cars. [Luis] ended up buying the Mustang.
[Luis] and his son [Marvin] went to look at cars. [Luis] ended up buying the Mustang. [Luis] wanted to buy his sister a birthday gift but her son [David] said she did n't want any gifts. [Emily] was eager to spend time with her son, [David].
[{('Marvin', 'mother', 'Emily'): [('Marvin', 'brother', 'David'), ('David', 'mother', 'Emily')]}, {('Marvin', 'brother', 'David'): [('Marvin', 'son', 'Luis'), ('Luis', 'uncle', 'David')]}]