Question: we elect us representatives for how many years
[{'answer': 'Two years', 'provenance': [{'wikipedia_id': '19468510', 'title': 'United States House of Representatives', 'start_paragraph_id': 125, 'start_character': 30, 'end_paragraph_id': 125, 'end_character': 39, 'bleu_score': 1.0, 'section': 'Section::::References.:Notes.\n'}]}]