and { only { filter_eq { filter_less { all_rows ; time ; 1:40 } ; country ; canada } } ; eq { hop { filter_eq { filter_less { all_rows ; time ; 1:40 } ; country ; canada } ; athletes } ; adam van koeverden } } = true
select the rows whose time record is less than 1:40 . among these rows , select the rows whose country record fuzzily matches to canada . there is only one such row in the table . the athletes record of this unqiue row is adam van koeverden .