Question: how much area of the earth is covered with land
[{'answer': 'about 29.2 %', 'provenance': [{'wikipedia_id': '40083369', 'title': 'Land', 'start_paragraph_id': 13, 'start_character': 69, 'end_paragraph_id': 13, 'end_character': 83, 'bleu_score': 1.0, 'section': 'Section::::Area.\n'}]}]