Question: where does a cell obtain the energy for active transport
[{'answer': 'ATP', 'provenance': [{'wikipedia_id': '144602', 'title': 'Active transport', 'start_paragraph_id': 1, 'start_character': 374, 'end_paragraph_id': 1, 'end_character': 377, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'electrochemical gradient', 'provenance': [{'wikipedia_id': '144602', 'title': 'Active transport', 'start_paragraph_id': 1, 'start_character': 424, 'end_paragraph_id': 1, 'end_character': 448, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '144602', 'title': 'Active transport', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 543, 'bleu_score': 0.90013816800116, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2992896157397188037}, 'section': 'Section::::Abstract.'}]}]