and { only { filter_eq { all_rows ; age at inauguration ; 64years , 67days } } ; eq { hop { filter_eq { all_rows ; age at inauguration ; 64years , 67days } ; date of inauguration } ; 25 july 1977 } } = true
select the rows whose age at inauguration record fuzzily matches to 64years , 67days . there is only one such row in the table . the date of inauguration record of this unqiue row is 25 july 1977 .