and { only { filter_greater { all_rows ; us viewers ( million ) ; 1.7 } } ; eq { hop { filter_greater { all_rows ; us viewers ( million ) ; 1.7 } ; no } ; 7 } } = true
select the rows whose us viewers  million  record is greater than 1.7 . there is only one such row in the table . the no record of this unqiue row is 7 .