Question: how many senators are there in the us senate
[{'answer': '100', 'provenance': [{'wikipedia_id': '26701', 'title': 'List of current United States Senators', 'start_paragraph_id': 1, 'start_character': 37, 'end_paragraph_id': 1, 'end_character': 40, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '100 members', 'provenance': [{'wikipedia_id': '26701', 'title': 'List of current United States Senators', 'start_paragraph_id': 1, 'start_character': 37, 'end_paragraph_id': 1, 'end_character': 48, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '100 members , two from each of the 50 states'}, {'provenance': [{'wikipedia_id': '26701', 'title': 'List of current United States Senators', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 148, 'bleu_score': 0.583145968758198, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3735003823229384326}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '462531', 'title': 'United States congressional apportionment', 'section': 'Section::::Number of members.:Proposed expansion.\n', 'start_paragraph_id': 31, 'end_paragraph_id': 31, 'meta': {'evidence_span': ['the Senate, if desired. For example, such a rule would call for 676 members of the legislature based on the 2010 United States Census; this could be 676 members of House, 576 (676 - 100 Senators), or 575 (676 - 100 Senators - 1 Vice President). An additional House', 'Another proposed expansion rule, the Cube Root rule, calls for the membership of the legislature to be based on the cube root (rounded up) of the U.S. population at the last census; this can be split between the House and the Senate, if desired. For example, such a rule would call for 676 members of the legislature based on the 2010 United States Census; this could be 676 members of House, 576 (676 - 100 Senators), or 575 (676 - 100 Senators - 1 Vice President). An additional House member would be added each time the "national" population "exceeds" the next cube; in this case, the next House member would be added when the census population reached 308,915,777, and the one after that at 310,288,734. On May 21, 2001, Rep. Alcee Hastings sent a dear colleague letter pointing out that\rhighlight sentence(s) containing evidence, not only the answer']}}]}, {'provenance': [{'wikipedia_id': '26701', 'title': 'List of current United States Senators', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The United States Senate consists of 100 members,', 'The United States Senate consists of 100 members, 2 from each of the 50 states.', 'The United States Senate consists of 100 members,']}}]}]