user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: Who is the current Ohio State Senator that held the position the latest? 
Knowledge Triplets: m.0bfmhqj, government.government_position_held.office_position_or_title, United States Senator
m.0wg66yz, government.government_position_held.governmental_body, Ohio House of Representatives
Ohio, government.governmental_jurisdiction.government_bodies, Ohio Senate
m.0bfmhqj, government.government_position_held.governmental_body, United States Senate
m.0bfmht4, government.government_position_held.district_represented, Ohio
m.0bfmhw_, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhxv, government.government_position_held.basic_title, Senator
m.0bfmkfs, government.government_position_held.district_represented, Ohio
m.012dzlr4, government.government_position_held.governmental_body, Ohio House of Representatives
m.0k1bgw_, government.government_position_held.office_position_or_title, United States Senate majority leader
m.09rfdwh, government.government_position_held.office_position_or_title, President pro tempore of the United States Senate
m.0gm5f32, government.government_position_held.basic_title, Senator
m.0bfmkq4, government.government_position_held.office_position_or_title, United States Senator
m.0bfmkq4, government.government_position_held.governmental_body, United States Senate
m.0bfmkt_, government.government_position_held.office_position_or_title, United States Senator
m.0bfmks0, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhz9, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhvf, government.government_position_held.basic_title, Senator
m.0bfmhpw, government.government_position_held.office_holder, Kingsley A. Taft
m.0bfmkhc, government.government_position_held.basic_title, Senator
m.0bfmkqs, government.government_position_held.governmental_body, United States Senate
m.0wsl58x, government.government_position_held.governmental_body, Ohio House of Representatives
m.0bfmhzn, government.government_position_held.office_holder, Thomas Worthington
m.0bfmkf4, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhvf, government.government_position_held.office_holder, Thomas Corwin
m.0bfmkqg, government.government_position_held.district_represented, Ohio
Ohio House of Representatives, business.employer.employees, m.03wzk52
United States of America, people.person.nationality, Rob Portman
m.0bfmhl0, government.government_position_held.basic_title, Senator
m.0bfmkq4, government.government_position_held.office_holder, Theodore E. Burton
m.052jk8c, government.government_position_held.governmental_body, United States Senate
m.05kg_6s, government.government_position_held.governmental_body, United States Senate
m.0bfmktn, government.government_position_held.office_holder, William B. Saxbe
United States Senate election in Ohio, 2010, government.election.district, Ohio
m.0bfmkgq, government.government_position_held.district_represented, Ohio
m.0bfmkm3, government.government_position_held.office_holder, George H. Pendleton
m.0wg6105, government.government_position_held.governmental_body, Ohio House of Representatives
m.0gm5f32, government.government_position_held.office_holder, Rob Portman
m.0bfmkl4, government.government_position_held.office_position_or_title, United States Senator
m.05k9hxg, government.government_position_held.governmental_body, United States Senate
Ohio State Senator, common.topic.notable_types, Government Office or Title
m.0bfmhtg, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhwp, government.government_position_held.office_position_or_title, United States Senator
m.04mmcc8, government.government_position_held.governmental_body, United States Senate
m.0bfmkdj, government.government_position_held.basic_title, Senator
m.0k1bgw_, government.government_position_held.governmental_body, United States Senate
m.0bfmkl4, government.government_position_held.district_represented, Ohio
m.0bfmkd6, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhlb, government.government_position_held.governmental_body, United States Senate
m.0bfmksn, government.government_position_held.district_represented, Ohio
m.0bfmhpw, government.government_position_held.governmental_body, United States Senate
United States Senate, government.government_position_held.governmental_body, m.0gm5f32
m.0bfmknp, government.government_position_held.district_represented, Ohio
United States Senate election in Ohio, 2010, common.topic.notable_for, g.125fpx87t
m.0bfmkgq, government.government_position_held.governmental_body, United States Senate
m.0bfmkdv, government.government_position_held.basic_title, Senator
m.0bfmhst, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhw_, government.government_position_held.office_holder, Joseph Kerr
m.052jk8v, government.government_position_held.office_position_or_title, United States Senate majority leader
m.0bfmkt9, government.government_position_held.office_position_or_title, United States Senator
m.05nlpmx, government.government_position_held.office_position_or_title, President pro tempore of the United States Senate
Ohio House of Representatives, common.topic.webpage, m.064xy12
m.0bfmkdj, government.government_position_held.district_represented, Ohio
m.052jk2b, government.government_position_held.governmental_body, United States Senate
m.0bfmhtt, government.government_position_held.office_holder, Benjamin Wade
m.0bfmkmr, government.government_position_held.governmental_body, United States Senate
m.0bfmhl0, government.government_position_held.governmental_body, United States Senate
m.0bfmkf4, government.government_position_held.office_holder, Jeremiah Morrow
m.0bfmhzn, government.government_position_held.district_represented, Ohio
m.0bfmht4, government.government_position_held.governmental_body, United States Senate
m.0bfmkkv, government.government_position_held.district_represented, Ohio
m.0nbz2xd, government.government_position_held.office_position_or_title, President pro tempore of the United States Senate
m.0bfmkl4, government.government_position_held.basic_title, Senator
Urban Meyer, american_football.football_coach.current_team_head_coached, Ohio State Buckeyes football
Ohio Senate, government.governmental_body.body_this_is_a_component_of, Ohio General Assembly
m.0bfmkm3, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhvf, government.government_position_held.office_position_or_title, United States Senator
m.0bfmkfg, government.government_position_held.office_holder, William A. Trimble
m.0gm5f32, government.government_position_held.office_holder, Rob Portman
m.0gm5f32, government.government_position_held.district_represented, Ohio
m.05glyvj, government.government_position_held.governmental_body, Government of Ohio
m.0bfmhst, government.government_position_held.district_represented, Ohio
m.0bfmknp, government.government_position_held.office_position_or_title, United States Senator
m.0wf59ns, government.government_position_held.jurisdiction_of_office, Ohio
m.0bfmkgd, government.government_position_held.office_position_or_title, United States Senator
m.0bfmkdv, government.government_position_held.office_holder, Alexander Campbell
m.0bfmhrh, government.government_position_held.district_represented, Ohio
m.0bfmkp5, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhwp, government.government_position_held.basic_title, Senator
m.0bfmks0, government.government_position_held.district_represented, Ohio
m.0bfmhlb, government.government_position_held.office_position_or_title, United States Senator
m.0nbz0_p, government.government_position_held.governmental_body, United States Senate
m.0bfmkv9, government.government_position_held.office_holder, John Glenn
m.0bfmhvr, government.government_position_held.basic_title, Senator
m.0bfmkn1, government.government_position_held.governmental_body, United States Senate
United States Senate elections, 2010, government.general_election.contests, United States Senate election in Ohio, 2010
m.0bfmkg2, government.government_position_held.governmental_body, United States Senate
Ohio, location.country.first_level_divisions, United States of America
m.0bfmkqg, government.government_position_held.office_holder, Roscoe C. McCulloch
m.0bfmkg2, government.government_position_held.district_represented, Ohio
m.0bfmkn1, government.government_position_held.district_represented, Ohio
Ohio Senate, government.governmental_body.jurisdiction, Ohio
m.0bfmkt_, government.government_position_held.district_represented, Ohio
m.0bfmkph, government.government_position_held.district_represented, Ohio
m.0bfmknp, government.government_position_held.office_holder, Theodore E. Burton
m.0bfmkp5, government.government_position_held.office_holder, Warren G. Harding
Ohio General Assembly, government.governmental_body.component_bodies, Ohio Senate
m.052jk8m, government.government_position_held.office_position_or_title, United States Senate minority leader
m.0bfmkf4, government.government_position_held.district_represented, Ohio
m.0bfmhz9, government.government_position_held.office_holder, John Smith
m.0bfmhr5, government.government_position_held.office_holder, Harold Hitz Burton
m.0bfmhvf, government.government_position_held.district_represented, Ohio
m.0bfmhsh, government.government_position_held.office_position_or_title, United States Senator
m.0bfmkl4, government.government_position_held.governmental_body, United States Senate
m.0znlpl4, government.government_position_held.governmental_body, Ohio House of Representatives
m.0bfmkdv, government.government_position_held.governmental_body, United States Senate
m.0bfmkmr, government.government_position_held.district_represented, Ohio
Ohio, government.political_district.representatives, m.0gm5f32
m.0bfmklh, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhl0, government.government_position_held.office_position_or_title, United States Senator
m.0bfmkpt, government.government_position_held.office_holder, Cyrus Locher
m.0bfmhwc, government.government_position_held.basic_title, Senator
United States presidential election in Ohio, 2012, common.topic.article, m.0h_b2nr
m.05kfccr, government.government_position_held.district_represented, Ohio
m.0bfmhl0, government.government_position_held.district_represented, Ohio
m.0bfmkm3, government.government_position_held.district_represented, Ohio
m.05t623d, common.webpage.topic, Ohio Senate
Ohio Senate, government.governmental_body.offices_positions, Ohio State Senator
m.0bfmkpt, government.government_position_held.district_represented, Ohio
Ohio Senate, common.topic.article, m.03fkgm
Ohio, location.location.events, United States Senate elections, 2006
m.0bfmks0, government.government_position_held.governmental_body, United States Senate
m.0bfmkpt, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhsh, government.government_position_held.governmental_body, United States Senate
Ohio House of Representatives, common.topic.article, m.039h59
m.0bfmkh1, government.government_position_held.basic_title, Senator
m.05kfccr, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhrh, government.government_position_held.office_holder, A. Victor Donahey
m.0bfmhtt, government.government_position_held.basic_title, Senator
m.0wsl58x, government.government_position_held.jurisdiction_of_office, Ohio
Ohio House of Representatives, common.topic.webpage, m.0b78yy2
m.0bfmhm3, government.government_position_held.district_represented, Ohio
m.0bfmhv3, government.government_position_held.basic_title, Senator
m.052jk8v, government.government_position_held.governmental_body, United States Senate
m.0bfmhm3, government.government_position_held.office_position_or_title, United States Senator
m.0bfmkkv, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhr5, government.government_position_held.governmental_body, United States Senate
m.0bfmkkv, government.government_position_held.basic_title, Senator
m.0bfmkv9, government.government_position_held.governmental_body, United States Senate
m.0bfmktn, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhmg, government.government_position_held.office_position_or_title, United States Senator
m.0bfmkfs, government.government_position_held.basic_title, Senator
m.0bfmkfg, government.government_position_held.district_represented, Ohio
m.0bfmhlb, government.government_position_held.district_represented, Ohio
m.0bfmkf4, government.government_position_held.governmental_body, United States Senate
m.052jk2b, government.government_position_held.office_position_or_title, United States Senate minority leader
m.094t_m4, government.government_position_held.office_position_or_title, United States Senate majority leader
m.0bfmkg2, government.government_position_held.basic_title, Senator
m.0bfmhvr, government.government_position_held.office_position_or_title, United States Senator
m.0bfmkt_, government.government_position_held.office_holder, Howard Metzenbaum
m.0bfmhvf, government.government_position_held.governmental_body, United States Senate
m.0bfmhy4, government.government_position_held.governmental_body, United States Senate
m.0bfmkgd, government.government_position_held.governmental_body, United States Senate
m.0bfmkqs, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhzn, government.government_position_held.basic_title, Senator
m.0bfmkg2, government.government_position_held.office_holder, William Henry Harrison
m.0bfmkd6, government.government_position_held.governmental_body, United States Senate
m.0bfmkgd, government.government_position_held.district_represented, Ohio
m.0kfs5tn, government.government_position_held.district_represented, Ohio
United States presidential election in Ohio, 2012, time.event.included_in_event, Super Tuesday, 2012
m.0wgcgh_, government.government_position_held.governmental_body, Ohio House of Representatives
m.0bfmkq4, government.government_position_held.district_represented, Ohio
m.0wf59ns, government.government_position_held.governmental_body, Ohio House of Representatives
m.0bfmhst, government.government_position_held.office_holder, Mark Hanna
m.0wg66yz, government.government_position_held.jurisdiction_of_office, Ohio
m.094t_m4, government.government_position_held.governmental_body, United States Senate
Ohio State Senator, common.topic.notable_for, g.125c1jtfp
m.05k9jtj, government.government_position_held.governmental_body, United States Senate
m.05nlpmx, government.government_position_held.governmental_body, United States Senate
m.0bfmkfg, government.government_position_held.office_position_or_title, United States Senator
m.08cqx1f, common.webpage.topic, Ohio Senate
m.0bfmhv3, government.government_position_held.governmental_body, United States Senate
m.0pcbw2g, government.government_position_held.governmental_body, Ohio House of Representatives
m.0bfmhwp, government.government_position_held.district_represented, Ohio
m.05kg_6s, government.government_position_held.office_holder, Sherrod Brown
m.05kg_6s, government.government_position_held.district_represented, Ohio
m.0bfmkgd, government.government_position_held.basic_title, Senator
m.09rfdwh, government.government_position_held.governmental_body, United States Senate
m.0bfmkd6, government.government_position_held.office_holder, Edward Tiffin
m.05kg_6s, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhw_, government.government_position_held.district_represented, Ohio
m.0bfmkgq, government.government_position_held.office_holder, Thomas Ewing
m.0bfmhzn, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhw_, government.government_position_held.basic_title, Senator
Ohio State Buckeyes football, american_football.football_team.current_head_coach, Urban Meyer
m.0bfmhms, government.government_position_held.office_position_or_title, United States Senator
m.05k9hxg, government.government_position_held.office_position_or_title, United States Senate majority leader
United States presidential election in Ohio, 2012, common.topic.notable_types, Event
m.0bfmhtt, government.government_position_held.district_represented, Ohio
m.0bfmkv9, government.government_position_held.district_represented, Ohio
m.0bfmhrv, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhpw, government.government_position_held.office_position_or_title, United States Senator
m.0bfmklh, government.government_position_held.office_holder, John Sherman
Ohio House of Representatives, common.topic.notable_for, g.1255ttscp
Ohio Senate, common.topic.notable_types, Governmental Body
m.0bfmkdj, government.government_position_held.governmental_body, United States Senate
m.0bfmhsh, government.government_position_held.district_represented, Ohio
Cincinnati, people.person.place_of_birth, Rob Portman
m.0pct9j_, government.government_position_held.governmental_body, Ohio House of Representatives
m.05kfccr, government.government_position_held.basic_title, Senator
m.0bfmkh1, government.government_position_held.office_position_or_title, United States Senator
m.0bfmks_, government.government_position_held.district_represented, Ohio
m.0bfmkqs, government.government_position_held.district_represented, Ohio
m.0bfmks_, government.government_position_held.office_position_or_title, United States Senator
m.0bfmkgd, government.government_position_held.office_holder, Jacob Burnet
m.0bfmhy4, government.government_position_held.basic_title, Senator
m.0bfmhrh, government.government_position_held.office_position_or_title, United States Senator
m.0bfmkfg, government.government_position_held.governmental_body, United States Senate
m.0bfmkf4, government.government_position_held.basic_title, Senator
m.0bfmkkv, government.government_position_held.office_holder, George E. Pugh
m.0bfmht4, government.government_position_held.office_holder, John Sherman
Ohio State Senator, government.government_office_or_title.jurisdiction, Ohio
m.0bfmktn, government.government_position_held.district_represented, Ohio
m.0bfmkh1, government.government_position_held.office_holder, William Allen
m.0bfmhms, government.government_position_held.office_holder, John W. Bricker
Ohio Senate, common.topic.webpage, m.08cqx1f
m.0wg6105, government.government_position_held.jurisdiction_of_office, Ohio
m.0bfmhxv, government.government_position_held.governmental_body, United States Senate
m.0bfmkdv, government.government_position_held.district_represented, Ohio
m.05kg_6s, government.government_position_held.basic_title, Senator
Ohio State Senator, government.government_office_or_title.governmental_body_if_any, Ohio Senate
United States presidential election in Ohio, 2012, common.topic.notable_for, g.125c5z1sj
m.0bfmkfs, government.government_position_held.office_holder, Ethan Allen Brown
m.0bfmkn1, government.government_position_held.office_position_or_title, United States Senator
m.0bfmklh, government.government_position_held.governmental_body, United States Senate
m.0bfmkgq, government.government_position_held.office_position_or_title, United States Senator
m.0bfmksn, government.government_position_held.office_holder, Thomas A. Burke
m.0bfmkp5, government.government_position_held.governmental_body, United States Senate
m.0bfmhwp, government.government_position_held.governmental_body, United States Senate
m.0bfmhv3, government.government_position_held.office_position_or_title, United States Senator
United States Senate election in Ohio, 2010, common.topic.image, Rob Portman official photo
m.0bfmkg2, government.government_position_held.office_position_or_title, United States Senator
United States Senate election in Ohio, 2010, government.election.office, United States Senator
m.0bfmktn, government.government_position_held.governmental_body, United States Senate
m.0bfmkhc, government.government_position_held.district_represented, Ohio
m.0bfmks0, government.government_position_held.office_holder, Robert A. Taft
m.0bfmkmf, government.government_position_held.governmental_body, United States Senate
m.0bfmhy4, government.government_position_held.office_position_or_title, United States Senator
m.0bfmkp5, government.government_position_held.district_represented, Ohio
United States Senate election in Ohio, 2010, common.topic.article, m.05233bx
m.0bfmhxv, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhv3, government.government_position_held.office_holder, Thomas Ewing
m.0gm5f32, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhwc, government.government_position_held.office_holder, Thomas Morris
m.0bfmkdv, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhy4, government.government_position_held.district_represented, Ohio
m.05kfccr, government.government_position_held.governmental_body, United States Senate
Ohio Senate, common.topic.notable_for, g.1257kj9vl
m.0bfmkt9, government.government_position_held.office_holder, Frank Lausche
m.0bfmkmf, government.government_position_held.district_represented, Ohio
m.0bfmksn, government.government_position_held.governmental_body, United States Senate
m.0bfmhxv, government.government_position_held.office_holder, Thomas Worthington
m.0nbz2xd, government.government_position_held.governmental_body, United States Senate
m.05kfccr, government.government_position_held.office_holder, George Voinovich
m.0bfmhz9, government.government_position_held.district_represented, Ohio
m.0bfmkt9, government.government_position_held.governmental_body, United States Senate
m.0bfmkv9, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhz9, government.government_position_held.basic_title, Senator
Ohio General Assembly, common.topic.image, Ohio Statehouse columbus
m.0bfmkdj, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhr5, government.government_position_held.district_represented, Ohio
m.0bfmht4, government.government_position_held.office_position_or_title, United States Senator
m.011xd152, government.government_position_held.governmental_body, Ohio House of Representatives
m.0bfmhm3, government.government_position_held.governmental_body, United States Senate
m.0bfmkmf, government.government_position_held.office_holder, Henry B. Payne
m.0bfmkqs, government.government_position_held.office_holder, Robert J. Bulkley
m.05glyvj, government.government_position_held.jurisdiction_of_office, Ohio
m.0bfmhr5, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhtg, government.government_position_held.office_holder, Allen G. Thurman
m.0bfmkqg, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhrv, government.government_position_held.governmental_body, United States Senate
m.0bfmhrh, government.government_position_held.governmental_body, United States Senate
Ohio, base.biblioness.bibs_location.state, Cincinnati
Ohio, government.political_district.elections, United States Senate election in Ohio, 2010
m.0bfmhwc, government.government_position_held.district_represented, Ohio
m.0bfmklh, government.government_position_held.district_represented, Ohio
United States Senate elections, 2006, time.event.locations, Ohio
m.0bfmhxv, government.government_position_held.district_represented, Ohio
m.0bfmhs4, government.government_position_held.office_position_or_title, United States Senator
Ohio, government.governmental_jurisdiction.government_positions, Ohio State Senator
m.0wgcgh_, government.government_position_held.jurisdiction_of_office, Ohio
m.0bfmhvr, government.government_position_held.office_holder, Benjamin Tappan
m.0bfmkph, government.government_position_held.office_holder, Frank B. Willis
m.0bfmhwp, government.government_position_held.office_holder, Benjamin Ruggles
m.0bfmhwc, government.government_position_held.office_position_or_title, United States Senator
United States Senate election in Ohio, 2010, government.election.general_election, United States Senate elections, 2010
m.0bfmhqj, government.government_position_held.district_represented, Ohio
m.052jk8c, government.government_position_held.office_position_or_title, United States Senate majority leader
m.0bfmkfg, government.government_position_held.basic_title, Senator
m.0bfmhrv, government.government_position_held.district_represented, Ohio
m.0bfmhm3, government.government_position_held.office_holder, Robert Taft, Jr.
m.0bfmkm3, government.government_position_held.governmental_body, United States Senate
m.0bfmkmr, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhmg, government.government_position_held.office_holder, Stephen M. Young
m.0bfmkhc, government.government_position_held.office_position_or_title, United States Senator
m.05k9jtj, government.government_position_held.office_position_or_title, United States Senate minority leader
United States Senate election in Ohio, 2010, common.topic.notable_types, Election contest
m.0bfmhtt, government.government_position_held.office_position_or_title, United States Senator
m.0bfmkh1, government.government_position_held.district_represented, Ohio
m.0bfmhv3, government.government_position_held.district_represented, Ohio
m.0bfmklt, government.government_position_held.district_represented, Ohio
m.0bfmhqj, government.government_position_held.office_holder, James W. Huffman
m.0bfmkd6, government.government_position_held.district_represented, Ohio
m.0bfmhs4, government.government_position_held.district_represented, Ohio
m.0bfmhz9, government.government_position_held.governmental_body, United States Senate
m.0bfmkgq, government.government_position_held.basic_title, Senator
m.0bfmhzn, government.government_position_held.governmental_body, United States Senate
Ohio Senate, common.topic.webpage, m.05t623d
m.0bfmksn, government.government_position_held.office_position_or_title, United States Senator
m.0bfmkqg, government.government_position_held.governmental_body, United States Senate
m.0bfmhms, government.government_position_held.district_represented, Ohio
m.0bfmks_, government.government_position_held.office_holder, George H. Bender
m.0bfmkmf, government.government_position_held.office_position_or_title, United States Senator
m.011xd152, government.government_position_held.jurisdiction_of_office, Ohio
m.0bfmhvr, government.government_position_held.district_represented, Ohio
m.0nbz0_p, government.government_position_held.office_position_or_title, President pro tempore of the United States Senate
m.0bfmhs4, government.government_position_held.governmental_body, United States Senate
m.0bfmkn1, government.government_position_held.office_holder, Joseph B. Foraker
m.04mmcc8, government.government_position_held.office_position_or_title, President pro tempore of the United States Senate
m.0bfmkd6, government.government_position_held.basic_title, Senator
m.0bfmkfs, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhtg, government.government_position_held.district_represented, Ohio
m.0bfmhw_, government.government_position_held.governmental_body, United States Senate
m.0bfmhmg, government.government_position_held.district_represented, Ohio
m.0bfmklt, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhpw, government.government_position_held.district_represented, Ohio
United States Senate, government.governmental_body.jurisdiction, United States of America
m.0bfmkph, government.government_position_held.office_position_or_title, United States Senator
m.0bfmhl0, government.government_position_held.office_holder, Mike DeWine
m.0bfmkt9, government.government_position_held.district_represented, Ohio
m.0bfmhlb, government.government_position_held.office_holder, Howard Metzenbaum

Answer: Rob Portman