DBpedia is regurlarly organising challenges to improve data and tools. Currently the following challenges are available:
TextExt: DBpedia’s Open Text Extraction Challenge
As DBpedia and Wikidata currently focus primarily on representing factual knowledge as contained in Wikipedia infoboxes, we created the DBpedia Open Text Extraction Challenge. Participants are asked to submit their engines that extract facts and knowledge from Wikipedia article texts to dramatically broaden and deepen the amount of structured DBpedia/Wikipedia data.