CREATE TABLE table_20434 ("Result" CLOB, "Date" CLOB, "Race" CLOB, "Venue" CLOB, "Group" CLOB, "Distance" CLOB, "Weight  ( kg ) " CLOB, "Time" CLOB, "Jockey" CLOB, "Winner/2nd" CLOB)

What is the entry for weight in kilograms of jockey D. Nikolic?
SELECT "Weight (kg)" FROM table_20434 WHERE "Jockey" = 'D. Nikolic'
SELECT "Weight (kg)" FROM "table_20434" WHERE "Jockey" = 'D. Nikolic'