1. A computer implemented method for modifying a set of annotations that include metadata describing properties of associated text fragments within an annotated text corpus, the method comprising: receiving a query specifying parameters for annotations from the set of the annotations; extracting, from the set of annotations and by the query, a first entity subset of annotations, a second entity subset of annotations, and a relations subset of annotations between the first entity subset of annotations and the second entity subset of annotations; extracting, from the annotated text corpus, contextual information relative to the extracted annotations; generating a user interface having display frames populated by frame elements that include the entity subsets of annotations, the relations subset of annotations, and the contextual information; receiving, responsive to selections of the frame elements, input specifying modifications to the annotations; and modifying, based on the input specifying modifications to the annotations, the set of annotations in the annotated text corpus.