Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_6312 ( "Model" text, "Codename" text, "Capacities (GB)" text, "NAND type" text, "Interface" text, "Form factor" text, "Controller" text, "Seq. read/write MB/s" text, "Rnd 4KB read/write IOPS (K)" text, "Introduced" text )

### Question ###
Which value for Form factor has Sandforce with Capacity 80/120/180/240/360/480 introduced in July 2013?

### Accurate SQL ###

SELECT "Form factor" FROM table_6312 WHERE "Controller" = 'sandforce' AND "Capacities (GB)" = '80/120/180/240/360/480' AND "Introduced" = 'july 2013'