Question: what is the major purpose for which organisms require energy
[{'answer': 'to run cellular processes', 'provenance': [{'wikipedia_id': '20374', 'title': 'Metabolism', 'start_paragraph_id': 1, 'start_character': 180, 'end_paragraph_id': 1, 'end_character': 205, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '20374', 'title': 'Metabolism', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 811, 'bleu_score': 0.872508994257547, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9943011732495599310}, 'section': 'Section::::Abstract.'}]}]