Question: why did the romans create a lot of portraits
[{'answer': 'increased interest in the individual', 'provenance': [{'wikipedia_id': '20597466', 'title': 'Roman portraiture', 'start_paragraph_id': 10, 'start_character': 54, 'end_paragraph_id': 10, 'end_character': 90, 'bleu_score': 1.0, 'section': 'Section::::Ideology.:Social and psychological aspect.\n'}]}, {'provenance': [{'wikipedia_id': '20597466', 'title': 'Roman portraiture', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 586, 'bleu_score': 0.9792717993254391, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4476799928552519492}, 'section': 'Section::::Ideology.:Social and psychological aspect.\n'}]}]