CREATE TABLE table_28151 ("Date" TEXT, "Location" TEXT, "Fight" TEXT, "Division" TEXT, "Titles" TEXT, "Rematch" TEXT, "TV" TEXT, "Promoter" TEXT, "Notes" TEXT)

How many notes are there for the Devon Alexander vs. Shawn Porter fight?
SELECT COUNT("Notes") FROM table_28151 WHERE "Fight" = 'Devon Alexander vs. Shawn Porter'
SELECT COUNT("Notes") FROM "table_28151" WHERE "Fight" = 'Devon Alexander vs. Shawn Porter'