Question: what was the name of scooby doo's van
[{'answer': 'Mystery Machine', 'provenance': [{'wikipedia_id': '31871202', 'title': 'List of Scooby-Doo characters', 'start_paragraph_id': 17, 'start_character': 1183, 'end_paragraph_id': 17, 'end_character': 1198, 'bleu_score': 1.0, 'section': 'Section::::Main characters.:Daphne Blake.\n'}]}, {'provenance': [{'wikipedia_id': '31871202', 'title': 'List of Scooby-Doo characters', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 1608, 'bleu_score': 0.9928442500246331, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8913021042947496150}, 'section': 'Section::::Main characters.:Daphne Blake.\n'}]}]