a lost vi command

[Vu Pham]

I thought a friend of mine told me how to do this in VI but now I cannot 
remember how to do it.

I have the below sentence:

this is an example blah1 blah2 blah3.

The cursor is currently at the letter 'e' of the word example. I want to 
delete the text "example blah1 blah2". IIRC, I was told to use 2 with 
some command ( or some command with 2 ) but I cannot remember what it is.

Could you please remind me ?

Thanks,

Vu
( already gooled, still googling but thought your help is faster that 
what I am doing ).