and { only { filter_less { filter_eq { all_rows ; hometown ; santiago de los caballeros } ; age ; 19 } } ; eq { hop { filter_less { filter_eq { all_rows ; hometown ; santiago de los caballeros } ; age ; 19 } ; contestant } ; valerie chardonnens vargas } } = true
select the rows whose hometown record fuzzily matches to santiago de los caballeros . among these rows , select the rows whose age record is less than 19 . there is only one such row in the table . the contestant record of this unqiue row is valerie chardonnens vargas .