Question: where is human chorionic gonadotropin (hcg) produced
[{'answer': 'the placenta', 'provenance': [{'wikipedia_id': '300445', 'title': 'Human chorionic gonadotropin', 'start_paragraph_id': 1, 'start_character': 60, 'end_paragraph_id': 1, 'end_character': 72, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '300445', 'title': 'Human chorionic gonadotropin', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 606, 'bleu_score': 0.979054689945215, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5323731529696919140}, 'section': 'Section::::Abstract.'}]}]