Which US senator served the longest?
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Robert Byrd was a United States senator.
Robert Byrd is a United States senator .
Which US senator served the longest?</s> [unused1]Robert Byrd                [unused2] was a United States senator.
Which US senator served the longest?</s>Robert Byrd was a United States senator.
Which US senator served the longest?</s> [unused1]Robert Byrd                [unused2] is a United States senator .
Which US senator served the longest?</s>Robert Byrd is a United States senator .
Which US senator served the longest?</s>United States senator,0,United States senator,United States senator,0,[unused1]Robert Byrd[unused2],[unused1]Robert Byrd[unused2],position held,United States senator,[unused1]Robert Byrd[unused2],0,[unused1]Robert Byrd[unused2]
Which US senator served the longest?</s>United States senator,0,United States senator,United States senator,0,Robert Byrd,Robert Byrd,position held,United States senator,Robert Byrd,0,Robert Byrd