user: Question: What is the average number of base pairs with 784 genes?
Columns: ['Species', 'Strain', 'Type', 'Base Pairs', 'Genes']
Types: ['text', 'text', 'text', 'real', 'real']
Sample row: ['Acidobacteria bacterium', 'Ellin345', 'Acidobacteria', 5650368.0, 4777.0]
SQL:

assistant: SELECT AVG("Base Pairs") FROM "Table" WHERE "Genes" = 784.0;