Assertion: locomotive's design | /r/HasProperty | developed by dr
Facets:
Source sentences:
text: Because the concept of the so-called "Einheitslokomotiven", the standard locomotives built in the 1920s and 1930s, and still in wide use, was already outdated in the pre-war era, a whole new design for the new steam locomotives was developed by DB and DR, called "Neubaudampflokomotiven" (new-build steam locomotives).