CREATE TABLE table_23769 ("Result" TEXT, "Date" TEXT, "Race" TEXT, "Venue" TEXT, "Group" TEXT, "Distance" TEXT, "Weight  ( kg ) " TEXT, "Jockey" TEXT, "Winner/2nd" TEXT)

What was the weight in kg when the jockey was B. York?
SELECT "Weight (kg)" FROM table_23769 WHERE "Jockey" = 'B. York'
SELECT "Weight (kg)" FROM "table_23769" WHERE "Jockey" = 'B. York'