Question: what is the next operating system after snow leopard
[{'answer': 'Lion', 'provenance': [{'wikipedia_id': '162549', 'title': 'MacOS version history', 'start_paragraph_id': 3, 'start_character': 251, 'end_paragraph_id': 3, 'end_character': 255, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '162549', 'title': 'MacOS version history', 'start_paragraph_id': 49, 'start_character': 0, 'end_paragraph_id': 49, 'end_character': 679, 'bleu_score': 0.726568643393504, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7250890683467190798}, 'section': 'Section::::Releases.:Version 10.7: "Lion".\n'}]}]