and { only { filter_greater { all_rows ; snatch ; 170.0 } } ; eq { hop { filter_greater { all_rows ; snatch ; 170.0 } ; name } ; joël mackenzie ( cub ) } } = true
select the rows whose snatch record is greater than 170.0 . there is only one such row in the table . the name record of this unqiue row is joël mackenzie  cub  .