Question: where are estrogen receptors located in the body
[{'answer': 'inside cells', 'provenance': [{'wikipedia_id': '1581134', 'title': 'Estrogen receptor', 'start_paragraph_id': 1, 'start_character': 55, 'end_paragraph_id': 1, 'end_character': 67, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1581134', 'title': 'Estrogen receptor', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 447, 'bleu_score': 0.9720210313175831, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16438484272393164663}, 'section': 'Section::::Abstract.'}]}]