CREATE TABLE "list_of_sequenced_bacterial_genomes" (
  "species" text,
  "strain" text,
  "type" text,
  "base_pairs" text,
  "genes" real,
  "reference" text
);

Question: what is the reference when the strain is msb8?
SQL: SELECT "reference" FROM "list_of_sequenced_bacterial_genomes" WHERE "strain"='msb8';

Question: what is the average genes when the reference is 2009 and the strain is rku-1?
SQL: SELECT AVG("genes") FROM "list_of_sequenced_bacterial_genomes" WHERE "reference"='2009' AND "strain"='rku-1';