CREATE TABLE table_77287 ("Res." TEXT, "Record" TEXT, "Opponent" TEXT, "Method" TEXT, "Event" TEXT, "Round" FLOAT, "Time" TEXT, "Location" TEXT)

What location did the event kotc: mortal sins take place?
SELECT "Location" FROM table_77287 WHERE "Event" = 'kotc: mortal sins'
SELECT "Location" FROM "table_77287" WHERE "Event" = 'kotc: mortal sins'