Question: the number of electrons in the innermost shell of lithium (atomic number 3)
[{'answer': '1', 'provenance': [{'wikipedia_id': '19916615', 'title': 'Electron shell', 'start_paragraph_id': 1, 'start_character': 427, 'end_paragraph_id': 1, 'end_character': 428, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]