Question: what season is the shooting in grey's anatomy
[{'answer': 'sixth season', 'provenance': [{'wikipedia_id': '47069325', 'title': "Death and All His Friends (Grey's Anatomy)", 'start_paragraph_id': 1, 'start_character': 56, 'end_paragraph_id': 1, 'end_character': 68, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '47069325', 'title': "Death and All His Friends (Grey's Anatomy)", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 927, 'bleu_score': 0.9774114419330401, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1171160077811017700}, 'section': 'Section::::Abstract.'}]}]