Problem about Scripts

[saufall]

Hello,
It's my first time to make a mod.
I get a problem,that how to add a topic to commoner when you get a circled item?
For example，you pick up an ebony longsword on the ground,and talk to NPC.And you will be able to talk about the topic"Ebony Longsword".
I know how to do it with one or two NPCs.But i don't know how to do it with so many commoners in Morrowind.

[saufall]

So you want to add the topic "Ebony Longsword" to everyone in Morrowind? I don't see anyway of doing that quickly.

So i should make a script for all commoners in Morrowind to add the topic? So sad.

Edit: It seems i have to change my plan.
By the way,anyone would like to tell me how to add last rumors?