A web application to search a large repository of taxonomic relations from the web

Taxonomic relations (also known as isa or hypernymy relations) represent one of the key building blocks of knowledge bases and foundational ontologies and provide a fundamental piece of information for many text understanding applications. Despite the availability of very large knowledge bases, however, some Natural Language Processing and Semantic Web applications (e.g., Ontology Learning) still require automatic isa relation harvesting techniques to cope with the coverage of domain-specific and long-tail terms. In this paper, we present a web application to directly query a very large repository of isa relations automatically extracted from the Common Crawl (the largest publicly available crawl of the Web). Our resource can be also downloaded for research purposes and accessed programmatically (we additionally release a Java application programming interface for this purpose).