One strength of Wikipedia, and a central factor for its growth, is that it does not restrict contributors. On the other hand, this leads to many inconsistencies within Wikipedia, especially between the 251 different language versions.
Extracting structured data from all 251 versions of DBpedia and interlinking this data with background knowledge from ontologies like OpenCyc, SUMO, or WordNet, allows different types of consistency checks. For instance:
One promising direction for future work is to use DBpedia knowledge for consistency checks and to develop tools that support Wikipedia authors by offering editing/correction suggestions.