Question: when did the cassini spacecraft arrived at saturn
[{'answer': 'July 1 , 2004', 'provenance': [{'wikipedia_id': '67941', 'title': 'Cassini–Huygens', 'start_paragraph_id': 114, 'start_character': 3, 'end_paragraph_id': 114, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Selected events and discoveries.:Orbiting Saturn.\n'}]}, {'provenance': [{'wikipedia_id': '67941', 'title': 'Cassini–Huygens', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 1013, 'bleu_score': 0.9073501497473001, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14661000558201015168}, 'section': 'Section::::Abstract.'}]}]