facebook/kilt_tasks · Question for task dataset

Here’s the translation of your text:

kilt_nq_val = load_dataset("facebook/kilt_tasks", name="nq", split='validation')
kilt_nq_val[123]['output']

I checked a dataset. The result was as follows:

[{'answer': 'Hemant Brijwasi',
  'meta': {'score': -1},
  'provenance': [{'bleu_score': 1.0,
    'start_character': 38,
    'start_paragraph_id': 5,
    'end_character': 53,
    'end_paragraph_id': 5,
    'meta': {'fever_page_id': '',
     'fever_sentence_id': -1,
     'annotation_id': '-1',
     'yes_no_answer': '',
     'evidence_span': []},
    'section': 'Section::::Abstract.',
    'title': 'Rising Star (Indian season 2)',
    'wikipedia_id': '56204940'}]},
 {'answer': '',
  'meta': {'score': -1},
  'provenance': [{'bleu_score': 1.0,
    'start_character': 0,
    'start_paragraph_id': 0,
    'end_character': 0,
    'end_paragraph_id': 0,
    'meta': {'fever_page_id': '',
     'fever_sentence_id': -1,
     'annotation_id': '16757622677884152303',
     'yes_no_answer': 'NONE',
     'evidence_span': []},
    'section': 'Section::::Abstract.',
    'title': 'Rising Star (Indian season 2)',
    'wikipedia_id': '56204940'}]},
 {'answer': '',
  'meta': {'score': -1},
  'provenance': [{'bleu_score': -1.0,
    'start_character': -1,
    'start_paragraph_id': 5,
    'end_character': -1,
    'end_paragraph_id': 5,
    'meta': {'fever_page_id': '',
     'fever_sentence_id': -1,
     'annotation_id': '-1',
     'yes_no_answer': '',
     'evidence_span': ['The winner of Rising Star Season 2 is Hemant Brijwasi.',
      'The winner of Rising Star Season 2 is Hemant Brijwasi.',
      'The winner of Rising Star Season 2 is Hemant Brijwasi.']},
    'section': 'Section::::Abstract.',
    'title': 'Rising Star (Indian season 2)',
    'wikipedia_id': '56204940'}]},
 {'answer': '',
  'meta': {'score': -1},
  'provenance': [{'bleu_score': -1.0,
    'start_character': -1,
    'start_paragraph_id': 2,
    'end_character': -1,
    'end_paragraph_id': 2,
    'meta': {'fever_page_id': '',
     'fever_sentence_id': -1,
     'annotation_id': '-1',
     'yes_no_answer': '',
     'evidence_span': ['The winner of Rising Star Season 2 is Hemant Brijwasi',
      'The winner of Rising Star Season 2 is Hemant Brijwasi.',
      'The winner of Rising Star Season 2 is Hemant Brijwasi. In']},
    'section': 'Section::::Abstract.',
    'title': 'Rising Star (Indian season 2)',
    'wikipedia_id': '56204940'}]}]

My question is :
=> 'answer': ''
Doesn't this mean there is no answer? I don't understand why these kinds of data are grouped together."