less { hop { filter_eq { all_rows ; team ; portland trail blazers } ; date } ; hop { filter_eq { all_rows ; team ; detroit pistons } ; date } } = true
select the rows whose team record fuzzily matches to portland trail blazers . take the date record of this row . select the rows whose team record fuzzily matches to detroit pistons . take the date record of this row . the first record is less than the second record .