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: 'In the event of the absence of the Treasurer , the Assistant Treasurer shall assume the duties of the Treasurer .', Argument/Subject 1: 'assistant treasurer', Argument/Subject 2: 'treasurer'
assume duty of

Sentence: 'Switch Guide is devoted to assisting and encouraging users wishing to switch from Microsoft Internet Explorer to a safer and better-performing alternative in Netscape , Mozilla , or Firefox and Thunderbird .', Argument/Subject 1: 'netscape', Argument/Subject 2: 'internet explorer'
be alternative to

Sentence: 'The Committee shall report to Council through the Board of Directors .', Argument/Subject 1: 'committee', Argument/Subject 2: 'council'

report to