and { only { filter_not_eq { all_rows ; time ; 8:00 pm } } ; eq { hop { filter_not_eq { all_rows ; time ; 8:00 pm } ; ground } ; robertson oval , wagga wagga } } = true
select the rows whose time record does not match to 8:00 pm . there is only one such row in the table . the ground record of this unqiue row is robertson oval , wagga wagga .