CREATE TABLE table_203_509 (id DECIMAL, "year" DECIMAL, "laetare medalist" TEXT, "position" TEXT)

who won the medal after thomas e. murray in 1952 ?
SELECT "laetare medalist" FROM table_203_509 WHERE "year" > 1952 ORDER BY "year" LIMIT 1
SELECT "laetare medalist" FROM "table_203_509" WHERE "year" > 1952 ORDER BY "year" NULLS FIRST LIMIT 1