and { only { filter_eq { all_rows ; results ; retired to run for us senate democratic hold } } ; eq { hop { filter_eq { all_rows ; results ; retired to run for us senate democratic hold } ; incumbent } ; harold ford jr } } = true
select the rows whose results record fuzzily matches to retired to run for us senate democratic hold . there is only one such row in the table . the incumbent record of this unqiue row is harold ford jr .