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: 'The SpamButcher anti-spam tool works with Outlook , Outlook Express , Eudora , Netscape or any other POP3 compatible e-mail client .', Argument/Subject 1: 'spambutcher', Argument/Subject 2: 'outlook'
[A]: work with


[Q]: Sentence: 'This is important because Windows Vista , the upcoming version of the Microsoft Windows operating system , will require DRM for playback of HD content .', Argument/Subject 1: 'vista', Argument/Subject 2: 'microsoft window'
[A]: be version of


[Q]: Sentence: 'Microsoft has acquired Greenfield Online , the owner of ciao.com for a stunning $ 486 million .', Argument/Subject 1: 'microsoft', Argument/Subject 2: 'greenfield online'
[A]:
acquire