CREATE TABLE table_31235 ("Round" TEXT, "Clubs remaining" FLOAT, "Clubs involved" FLOAT, "Winners from previous round" FLOAT, "New entries this round" TEXT, "Leagues entering at this round" TEXT)

How many clubs remained when there were 4 winners from the previous round?
SELECT "Clubs remaining" FROM table_31235 WHERE "Winners from previous round" = '4'
SELECT "Clubs remaining" FROM "table_31235" WHERE "Winners from previous round" = '4'