QUALIFYING_ATTRIBUTE_SPECS = {
    'relevance' => '@attr 2=102 @attr 5=3 ', # we specify @attr 5=103, or fuzzy, separately now
    'exact' => '@attr 4=3 ', # this is meant for exact matches against key indexes
    'complete' => '@attr 6=3 ', # this is like exact, except to find exact matches against word or phrase indexes
    'partial' => '@attr 5=3 ',