story: [Valerie] bought her son [Clarence] a basketball for his birthday. [Alan]'s daughter [Venita] called to wish him and [Valerie] a happy anniversary.
query: ('Clarence', 'Venita')
clean_story: [Valerie] bought her son [Clarence] a basketball for his birthday. [Alan]'s daughter [Venita] called to wish him and [Valerie] a happy anniversary.
proof_state: [{('Clarence', 'sister', 'Venita'): [('Clarence', 'mother', 'Valerie'), ('Valerie', 'daughter', 'Venita')]}, {('Valerie', 'daughter', 'Venita'): [('Valerie', 'husband', 'Alan'), ('Alan', 'daughter', 'Venita')]}]