Question: 1 anna is equal to how many square feet
[{'answer': '342.25', 'provenance': [{'wikipedia_id': '37986169', 'title': 'Nepalese customary units of measurement', 'start_paragraph_id': 20, 'start_character': 54, 'end_paragraph_id': 20, 'end_character': 59, 'bleu_score': 1.0, 'section': 'Section::::Area.\n'}]}]