CREATE TABLE table_50833 ("Year" TEXT, "Team" TEXT, "Attempts" TEXT, "Completions" TEXT, "Completion %" TEXT, "Yards" TEXT)

What were the number of completions for James Vanderberg on Iowa when his yards were 45?
SELECT "Completions" FROM table_50833 WHERE "Team" = 'iowa' AND "Yards" = '45'
SELECT "Completions" FROM "table_50833" WHERE "Team" = 'iowa' AND "Yards" = '45'