Question: when did the genre of installation art start to gain acceptance
[{'answer': 'in the 1970s', 'provenance': [{'wikipedia_id': '148099', 'title': 'Installation art', 'start_paragraph_id': 4, 'start_character': 36, 'end_paragraph_id': 4, 'end_character': 48, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '148099', 'title': 'Installation art', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 625, 'bleu_score': 0.8031644446519761, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13408086447952439229}, 'section': 'Section::::History.\n'}]}]