Question: who developed the first model of the mouse
[{'answer': 'Douglas Engelbart', 'provenance': [{'wikipedia_id': '7056', 'title': 'Computer mouse', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 17, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '7056', 'title': 'Computer mouse', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 317, 'bleu_score': 0.9269343237061861, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5548814332792244144}, 'section': 'Section::::History.\n'}]}]