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.
Q: Sentence: 'SINGULAIR was switched to Accolate because SINGULAIR could find no monologue of Singulair with the safety profile similar to that of placebo .', Argument/Subject 1: 'singulair', Argument/Subject 2: 'accolate'
A: 
be switch to