[Mark] took his daughter [Mary] to cheer practice. [Carol] and her husband [Mark] liked to take their daughter [Anna] to the ice skating rink. Occasionally, [Anna]'s grandmother [Sandra] came along.
[Carol] and her husband [Mark] liked to take their daughter [Anna] to the ice skating rink. Occasionally, [Anna]'s grandmother [Sandra] came along.
[{('Carol', 'mother-in-law', 'Sandra'): [('Carol', 'husband', 'Mark'), ('Mark', 'mother', 'Sandra')]}, {('Mark', 'mother', 'Sandra'): [('Mark', 'daughter', 'Anna'), ('Anna', 'grandmother', 'Sandra')]}]