Question: when does mark die in grey's anatomy
[{'answer': 'in the eighth season finale', 'provenance': [{'wikipedia_id': '10213087', 'title': "Mark Sloan (Grey's Anatomy)", 'start_paragraph_id': 1, 'start_character': 795, 'end_paragraph_id': 1, 'end_character': 822, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '10213087', 'title': "Mark Sloan (Grey's Anatomy)", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 914, 'bleu_score': 0.5417890616937251, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7005720883382397457}, 'section': 'Section::::Abstract.'}]}]