Question: the ghent altarpiece which represents the divine was threatened by
[{'answer': 'outbreaks of iconoclasm', 'provenance': [{'wikipedia_id': '195823', 'title': 'Ghent Altarpiece', 'start_paragraph_id': 19, 'start_character': 34, 'end_paragraph_id': 19, 'end_character': 57, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '195823', 'title': 'Ghent Altarpiece', 'start_paragraph_id': 19, 'start_character': 11, 'end_paragraph_id': 19, 'end_character': 801, 'bleu_score': 0.6363487592507281, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1840422468778015357}, 'section': 'Section::::History.\n'}]}]