Question: Which species has a Voges-Proskauer reading of Negative and an indole reading of Negative?
SQL: SELECT "Species" FROM "2-16083989-1" WHERE "Voges-Proskauer" = 'Negative' AND "Indole" = 'Negative';

Question: What is the Voges-Proskauer reading for Proteus mirabilis?
SQL: SELECT "Voges-Proskauer" FROM "2-16083989-1" WHERE "Species" = 'Proteus mirabilis';

Question: What is the methyl red reading for the species that tests Positive for indole?
SQL: SELECT "Methyl Red" FROM "2-16083989-1" WHERE "Indole" = 'Positive';

Question: What is the methyl red reading for Proteus mirabilis?
SQL: SELECT "Methyl Red" FROM "2-16083989-1" WHERE "Species" = 'Proteus mirabilis';