Question: who invented the spiral model of communication select one
[{'answer': 'Barry Boehm', 'provenance': [{'wikipedia_id': '149504', 'title': 'Spiral model', 'start_paragraph_id': 3, 'start_character': 34, 'end_paragraph_id': 3, 'end_character': 45, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '149504', 'title': 'Spiral model', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 300, 'bleu_score': 0.958740481558872, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5733752274402992557}, 'section': 'Section::::History.\n'}]}]