Given the task definition and input, reply with output. Given a sentence and two mentions from the text (arguments), indicate a phrase (a verb or noun phrase) that describes the relationship between the provided arguments.

Sentence: 'Medical Device Manufacturers Association -- The MDMA is a national trade association based in Washington , D.C. that represents 130 independent manufacturers of medical devices , diagnostic products and health care information systems .', Argument/Subject 1: 'association', Argument/Subject 2: 'washington'
be base in