Question: what is the difference between senate and house of representatives
[{'answer': 'The House initiates impeachment cases', 'provenance': [{'wikipedia_id': '31756', 'title': 'United States Congress', 'start_paragraph_id': 6, 'start_character': 526, 'end_paragraph_id': 6, 'end_character': 563, 'bleu_score': 1.0, 'section': 'Section::::Overview.\n'}]}, {'answer': 'Senate decides impeachment cases', 'provenance': [{'wikipedia_id': '31756', 'title': 'United States Congress', 'start_paragraph_id': 6, 'start_character': 575, 'end_paragraph_id': 6, 'end_character': 607, 'bleu_score': 1.0, 'section': 'Section::::Overview.\n'}]}, {'answer': 'Senate ratifies treaties and approves presidential appointments'}, {'answer': 'House initiates revenue - raising bills'}, {'provenance': [{'wikipedia_id': '31756', 'title': 'United States Congress', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 715, 'bleu_score': 0.9817332376369081, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15024621067603582144}, 'section': 'Section::::Overview.\n'}]}]