Question: group f/64 was a major backlash against the earlier photographic movement of
[{'answer': 'tide of oppressive pictorialism', 'provenance': [{'wikipedia_id': '210118', 'title': 'Group f/64', 'start_paragraph_id': 4, 'start_character': 777, 'end_paragraph_id': 4, 'end_character': 808, 'bleu_score': 1.0, 'section': 'Section::::Background.\n'}]}, {'provenance': [{'wikipedia_id': '210118', 'title': 'Group f/64', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 928, 'bleu_score': 0.9529397848298691, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8302483889517641621}, 'section': 'Section::::Background.\n'}]}]