CREATE TABLE table_44101 ("Nat." TEXT, "Name" TEXT, "Moving from" TEXT, "Type" TEXT, "Transfer window" TEXT, "Ends" FLOAT, "Transfer fee" TEXT, "Source" TEXT)

Where is the moving from location with a transfer window of summer and the source kerkida.net?
SELECT "Moving from" FROM table_44101 WHERE "Transfer window" = 'summer' AND "Source" = 'kerkida.net'
SELECT "Moving from" FROM "table_44101" WHERE "Source" = 'kerkida.net' AND "Transfer window" = 'summer'