Question: what year did the oklahoma bombing take place
[{'answer': '1995', 'provenance': [{'wikipedia_id': '22467', 'title': 'Oklahoma City bombing', 'start_paragraph_id': 1, 'start_character': 161, 'end_paragraph_id': 1, 'end_character': 165, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '22467', 'title': 'Oklahoma City bombing', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1139, 'bleu_score': 0.914910309457676, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14557863719635284893}, 'section': 'Section::::Abstract.'}]}]