It's so hard when going quickly through a list of a few hundred to always give the exact right thing. I do try very hard to give what is requested. But if you click culture over and over and over and then pops up a main hall, your finger clicks the culture button before the main hall even registers.In your city name, you can request what kind of help you want. C is Culture, M is main hall, B is builder hut. That doesn't guarantee people will actually honor that request. I have "B & C only " in my city name yet people relentlessly help my main hall. Haha.