[Joseph] took his grandson [Andrew] fishing. [Tracy] and her son [Mario] went to visit [Tracy]'s mother [Angela] in the hospital. [Mario] bought to dress for his father [Marvin]
[Mario] bought to dress for his father [Marvin] [Tracy] and her son [Mario] went to visit [Tracy]'s mother [Angela] in the hospital.
[{('Marvin', 'mother', 'Angela'): [('Marvin', 'son', 'Mario'), ('Mario', 'grandmother', 'Angela')]}, {('Mario', 'grandmother', 'Angela'): [('Mario', 'mother', 'Tracy'), ('Tracy', 'mother', 'Angela')]}]