Towards a Resource for Lexical Semantics: A Large German Corpus with Extensive Semantic Annotation 
 We describe the ongoing construction of a large, semantically annotated corpus resource as reliable basis for the large-scale acquisition of word-semantic information , e.g. the construction of domain-independent lexica . The backbone of the annotation are semantic roles in the frame semantics paradigm . We report experiences and evaluate the annotated data from the first project stage. On this basis, we discuss the problems of vagueness and ambiguity in semantic annotation . 