How many different genes do we have if we add those located in the plasma and in the nucleus?
SELECT COUNT(GeneID) FROM Classification WHERE Localization IN ('plasma', 'nucleus')
database name:db_id genes
Classification table Classification Cols: gene id dtype text, Localization dtype text, 
Genes table Genes Cols: gene id dtype text, Essential dtype text, Class dtype text, Complex dtype text, Phenotype dtype text, Motif dtype text, Chromosome dtype integer, Function dtype text, Localization dtype text, 
Interactions table Interactions Cols: gene id 1 dtype text, gene id 2 dtype text, Type dtype text, Expression correlation score dtype real, 
