Question: what hormone is released in fight or flight response
[{'answer': 'norepinephrine', 'provenance': [{'wikipedia_id': '470843', 'title': 'Fight-or-flight response', 'start_paragraph_id': 1, 'start_character': 530, 'end_paragraph_id': 1, 'end_character': 544, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'epinephrine', 'provenance': [{'wikipedia_id': '470843', 'title': 'Fight-or-flight response', 'start_paragraph_id': 1, 'start_character': 533, 'end_paragraph_id': 1, 'end_character': 544, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '470843', 'title': 'Fight-or-flight response', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 711, 'bleu_score': 0.9808590314834971, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4546371893451054438}, 'section': 'Section::::Abstract.'}]}]