PubAnnotation-query: a search tool for corpora with multi-layers of annotation

Summary PubAnnotation provides a convenient platform to collect and align corpora with various annotations. However, corpora must be searchable to be useful, but there has been no standard way to search corpora, particularly when multiple layers of annotations are present. PubAnnotation-query is designed to provide an interface for searching corpora annotated with multiple layers. This paper describes the tool, with some example use cases. Its use is illustrated with two separate corpora.