How to remove labels from railways in Mapniks osm.xml


I want to do render some tiles based on osm-mapnik-style, but I would like to change some things. In most cases the osm.xml ( is easy. I’d like to remove labeling from railroads, trams, subways… and keep labels for street. I guess with “and not” at the filter section this is also an easy task. But I have no idea which style is labeling railways.

In my map, I would like to remove all the labels.

Does anybody know which rule is doing this labeling?