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

[Q]: Relationship: 'be research arm of', Argument/Subject 1: 'guttmacher institute', Argument/Subject 2: 'plan parenthood'
[A]: National numbers from the Alan Guttmacher Institute , a research arm of Planned Parenthood , and the Center for Disease Control reveal that the overwhelming majority of abortion clinics are located in metropolitan areas .

[Q]: Relationship: 'be base in', Argument/Subject 1: 'association', Argument/Subject 2: 'washington'
[A]: National Rural Electric Cooperative Association based in Washington , D.C.

[Q]: Relationship: 'approve', Argument/Subject 1: 'fda', Argument/Subject 2: 'viagra'
[A]:
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