(SPOILER)I don't know any of these, so it's all guess.
1. In Final Fantasy, how much GP does your party start off with in the NES version?
1000?

2. In Final Fantasy, what do the citizens refer to the city of Cornelia as?
Cornelia?

3. In Final Fantasy, where can you buy a Longsword?
Cornleia?

4. In Final Fantasy II, what can Guy do that no other characters can?
Uhmm, equip certain armors?

5. In Final Fantasy III, what was the name of the cave discovered by the Onion Knights?
Cave Macarena?