CREATE TABLE table_28971 ("Species" TEXT, "Common Name" TEXT, "Protein Name" TEXT, "Accession Number" TEXT, "NT Length" TEXT, "NT Identity" TEXT, "AA Length" TEXT, "AA Identity" TEXT, "E-Value" TEXT)

What is the aa length when the protein name is c11orf73?
SELECT "AA Length" FROM table_28971 WHERE "Protein Name" = 'C11orf73'
SELECT "AA Length" FROM "table_28971" WHERE "Protein Name" = 'C11orf73'