and { only { filter_eq { all_rows ; gene name ; alanyl - trna synthetase } } ; eq { hop { filter_eq { all_rows ; gene name ; alanyl - trna synthetase } ; genus / species } ; bartonella tribocorum } } = true
select the rows whose gene name record fuzzily matches to alanyl  trna synthetase . there is only one such row in the table . the genus  species record of this unqiue row is bartonella tribocorum .