Question: what is a group of 4 bits called
[{'answer': 'a nibble', 'provenance': [{'wikipedia_id': '21150', 'title': 'Nibble', 'start_paragraph_id': 1, 'start_character': 14, 'end_paragraph_id': 1, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '21150', 'title': 'Nibble', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 401, 'bleu_score': 0.9357502588195491, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5125491199053793529}, 'section': 'Section::::Abstract.'}]}]