This page allows you to run text through the PyMUSAS (Python Multilingual UCREL Semantic Analysis System) semantic tagger. More information about the USAS tagger including papers describing its creation, evaluation and applications are on the USAS web page. The original USAS English tagger is also available online on this API server and through Wmatrix. The pymusas tagger is available open source and is pip installable if you want to run it on your own computer.
This free service is not intended for extremely large numbers of repeated submissions from the same site. Please contact Paul Rayson (email: email@example.com), also use this address if you have technical problems.