CREATE TABLE table_50447 ("Name" TEXT, "Country" TEXT, "Type" TEXT, "Moving from" TEXT, "Transfer window" TEXT, "Transfer fee" TEXT)

What is the type of bulykin, which has a summer transfer window?
SELECT "Type" FROM table_50447 WHERE "Transfer window" = 'summer' AND "Name" = 'bulykin'
SELECT "Type" FROM "table_50447" WHERE "Name" = 'bulykin' AND "Transfer window" = 'summer'