Question: what grade is a 6 year old in usa
[{'answer': 'First grade', 'provenance': [{'wikipedia_id': '1066022', 'title': 'First grade', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1066022', 'title': 'First grade', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 225, 'bleu_score': 0.742269558326864, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13241794840753763642}, 'section': 'Section::::Abstract.'}]}]