Question: who collected the data used to describe the current model for the molecular structure of dna
[{'answer': 'James Watson', 'provenance': [{'wikipedia_id': '22833956', 'title': 'Molecular models of DNA', 'start_paragraph_id': 7, 'start_character': 84, 'end_paragraph_id': 7, 'end_character': 96, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'answer': 'Francis Crick', 'provenance': [{'wikipedia_id': '22833956', 'title': 'Molecular models of DNA', 'start_paragraph_id': 7, 'start_character': 101, 'end_paragraph_id': 7, 'end_character': 114, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '22833956', 'title': 'Molecular models of DNA', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 158, 'bleu_score': 0.544237401413174, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16419090463504513654}, 'section': 'Section::::History.\n'}]}]