Informatica Expression for INITCAP Question

Linux and Unix-Like UNIX and Linux Applications
1

Hi Team
I am using below expression function in INFORMATICA 9.5 to make initial letters as CAPS .

[INITCAP(IIF(ISNULL(ITEMS),'NA',ITEMS))]

Output :
Before After
APPLICATIONS --> Applications
SP TERMS --> Sp Terms

I want output to be as SP Terms
Please let me know what expression will satisfy my needs .Thanks

2 
Upper(REG_EXTRACT(ITEMS,' ',1)) || ' ' || INITCAP(REG_EXTRACT(ITEMS,' ',1))