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: 'Cyprus is the third largest island in the Mediterranean , a stepping-stone between Europe and Asia .', Argument/Subject 1: 'cyprus', Argument/Subject 2: 'mediterranean'
[A]: be island of

[Q]: Sentence: 'William Jefferson Clinton was the 42nd president of the United States .', Argument/Subject 1: 'william jefferson clinton', Argument/Subject 2: 'unite state'
[A]: be president of

[Q]: Sentence: 'Lorraine Denby is a member of the Statistics Research Department of Bell Labs , the research and development part of Lucent Technologies .', Argument/Subject 1: 'bell lab', Argument/Subject 2: 'lucent technology'
[A]:
be part of