CREATE TABLE table_23645 ("Standard Yarn Weight System" TEXT, "Yarn Type  ( US ) " TEXT, "Ply  ( UK ,  NZ ,  AU ) " TEXT, "m/100g" TEXT, "Wraps Per Inch  ( WPI ) " TEXT)

Name the ply uk, nz, au for wraps per inch 7 wpi
SELECT "Ply (UK, NZ, AU)" FROM table_23645 WHERE "Wraps Per Inch (WPI)" = '7 wpi'
SELECT "Ply (UK, NZ, AU)" FROM "table_23645" WHERE "Wraps Per Inch (WPI)" = '7 wpi'