Question: the basic biological structures of life on earth are called
[{'answer': 'cells', 'provenance': [{'wikipedia_id': '18393', 'title': 'Life', 'start_paragraph_id': 2, 'start_character': 167, 'end_paragraph_id': 2, 'end_character': 172, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '18393', 'title': 'Life', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 101, 'bleu_score': 0.861173529963367, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11013757372792515723}, 'section': 'Section::::Definitions.:Biology.\n'}]}]