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: 'WDB was written in Perl , and used to provide access to a Sybase database .', Argument/Subject 1: 'wdb', Argument/Subject 2: 'perl'
be write in

Sentence: 'Colin Powell endorsed Obama because he 's black .', Argument/Subject 1: 'powell', Argument/Subject 2: 'obama'
endorse

Sentence: 'Paper presented at 1990 Annual Conference , National Tax Association , San Francisco , November 11-14 , 1990 .', Argument/Subject 1: 'paper', Argument/Subject 2: 'annual conference'

present at