Again, I don't want to give you an itemized list of topics that were discussed because I don't have that list to read from for you and I don't wan to say that something was discussed if I don't know for sure that it was.

WHITEHOUSE: Press Briefing

I'm pretty sure I didn't hit anybody, but I'm not gonna say that because I don't know for sure.

CNN: Army tapes reveal motive in Iraq prisoner killings

But I don't know for sure.

WHITEHOUSE: Press Briefing

Dr. NIEDERDEPPE: Well, I think - we don't know for sure, but I think there are at least three things that may be going on here.

NPR: Confronting Misconceptions About Cancer Prevention

"Well I don't believe David Souter was on our side on the gay marriage issue although we don't know for sure, " Gallagher said.

CNN: King: Same-sex marriage debate heats up in New York

"I don't know whether it has caught me out but, for sure, experience is always an advantage, " said Hamilton.

BBC: Hamilton defiant over title race

Ms. SOFIA TOITEE (Shopkeeper, Saint-Denis): (Through translator) It's better now for sure, but for how long I don't know.

NPR: Violence Overshadows Upcoming French Elections

"Even if I knew for sure that running fast had an element of risk, I don't know that I would back down, " said Foiles, the 56-year-old runner who lives in a Kansas City suburb.

WSJ: Endurance Sports: Studies on Older Endurance Athletes Suggest the Fittest Reap Few Health Benefits