CREATE TABLE table_62703 ("Season" FLOAT, "Winners" CLOB, "Runners-up" CLOB, "Third-place" CLOB, "fourth-placed" CLOB, "Number of clubs" FLOAT)

What is the number of clubs before 2003 with a 4th place winner of Shenzhen Jianlibao?
SELECT AVG("Number of clubs") FROM table_62703 WHERE "fourth-placed" = 'shenzhen jianlibao' AND "Season" < '2003'
SELECT AVG("Number of clubs") FROM "table_62703" WHERE "Season" < '2003' AND "fourth-placed" = 'shenzhen jianlibao'