Question: The case of Loving v. Virginia in 1967 was a landmark civil rights decision of the US Supreme Court which invalidated what prohibition that was historically taboo in the United States and outlawed in South Africa?
{'answer': 'Interracial marriage', 'supporting_facts': [['Interracial marriage', 0], ['Interracial marriage', 1], ['Interracial marriage', 2], ['Loving v. Virginia', 0]]}