Given two noun phrases (arguments) and relationship between them, form a sentence that expresses theses arguments with the given relationship.

[EX Q]: Relationship: 'be version of', Argument/Subject 1: 'pubm', Argument/Subject 2: 'medline'
[EX A]: Our literature search used the PubMed version of Medline on the internet .

[EX Q]: Relationship: 'be president of', Argument/Subject 1: 'obama', Argument/Subject 2: 'america'
[EX A]: Barack Obama will be sworn as America 's first black president Tuesday under the tightest security ever , shielded by a new , heavily armoured Cadillac limousine , bullet-resistant glass , fighter planes overhead and Secret Service SWAT teams toting automatic weapons .

[EX Q]: Relationship: 'be chairman of', Argument/Subject 1: 'michael', Argument/Subject 2: 'policy exchange'
[EX A]:
Michael was previously chairman of Policy Exchange , a centre-right think tank launched in 2002 .