CREATE TABLE table_65498 ("Index" TEXT, "Score" TEXT, "PALOP rank" TEXT, "CPLP rank" TEXT, "n Africa rank" TEXT, "World rank" TEXT, "Year" FLOAT)

What's the n Africa in 2012 with an N/A as the CPLP?
SELECT "n Africa rank" FROM table_65498 WHERE "Year" = '2012' AND "CPLP rank" = 'n/a'
SELECT "n Africa rank" FROM "table_65498" WHERE "CPLP rank" = 'n/a' AND "Year" = '2012'