Question: who is credited with starting the second wave of the women's rights movement in the united states
[{'answer': 'Betty Friedan', 'provenance': [{'wikipedia_id': '631216', 'title': 'Second-wave feminism', 'start_paragraph_id': 8, 'start_character': 239, 'end_paragraph_id': 8, 'end_character': 252, 'bleu_score': 1.0, 'section': 'Section::::Overview in the United States.\n'}]}]