[pdenya]

In this case, no they didn't have pre-labeled location/setting available. You can see one of the datasets they used here: http://image-net.org/challenges/LSVRC/2013/#data.

Generally speaking, Neural Networks are black boxes. The layers interact with each other but not in a defined categorical manner like that. Layer size/depth are parameters you provide when setting up that have tradeoffs in result accuracy, space, time spent, etc like jpeg quality.