This paper summarizes results of automatic analysis of coordinating constructions and appositions in the Prague Dependency Treebank using a method of analysis by reduction. Experiments are performed on a large subset of the treebank.
This subset is obtained as a result of a query providing a set of more than 4,300 suitable sentences and their tree structures containing coordinations and appositions. The automatic procedure is complemented by a manual analysis of reasons why certain sentences (trees) were not fully reduced.
This analysis helps to gain a better insight into the phenomena of co- ordination and apposition and their formal properties.