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The tutorial chair , Mr. B. Shriver , is currently reviewing 18 proposals . " Until 2002 , Lerch had served for six years as member and then chair of AAAS 's Committee on Scientific Freedom and Responsibility , which advises AAAS 's human rights and scientific responsibility and ethics programs . A short while later ( usually not more than five minutes ) , Lansdale returns to the chair at his writing PC and gets to work . The possible items might include : chairs , tables , doors , exit signs , lamps , shoes , horses , cats , plants , tractors , trucks , cars , or family members . The policemen offered me the only chair in their squalid little room .