story: [Carol]'s sister, [Lisa], recently started acting. [Mark] went hunting with his son, [Richard]. [Alfred] enjoys playing tennis with his sister and her son. Her son is named [Richard]. [Carol] has been waiting around all day for her son, [Richard].
query: ('Lisa', 'Alfred')
clean_story: [Carol]'s sister, [Lisa], recently started acting. [Carol] has been waiting around all day for her son, [Richard]. [Alfred] enjoys playing tennis with his sister and her son. Her son is named [Richard].
proof_state: [{('Lisa', 'brother', 'Alfred'): [('Lisa', 'sister', 'Carol'), ('Carol', 'brother', 'Alfred')]}, {('Carol', 'brother', 'Alfred'): [('Carol', 'son', 'Richard'), ('Richard', 'uncle', 'Alfred')]}]