CREATE TABLE table_54519 ("Species" CLOB, "Strain" CLOB, "Type" CLOB, "Base Pairs" FLOAT, "Genes" FLOAT)

How many genes in the species Rubrobacter Xylanophilus?
SELECT "Genes" FROM table_54519 WHERE "Species" = 'rubrobacter xylanophilus'
SELECT "Genes" FROM "table_54519" WHERE "Species" = 'rubrobacter xylanophilus'