Which U.S. president did not use the telephone while in office?
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President of the United States is a subclass of president.
The president is a member of the United States .
Which U.S. president did not use the telephone while in office?</s>President of the United States is a subclass of [unused1]president                [unused2] .
Which U.S. president did not use the telephone while in office?</s>President of the United States is a subclass of president.
Which U.S. president did not use the telephone while in office?</s>The [unused1]president                [unused2] is a member of the United States .
Which U.S. president did not use the telephone while in office?</s>The president is a member of the United States .
Which U.S. president did not use the telephone while in office?</s>President of the United States,0,President of the United States,President of the United States,subclass of,[unused1]president[unused2],[unused1]president[unused2],0,President of the United States,[unused1]president[unused2],0,[unused1]president[unused2]
Which U.S. president did not use the telephone while in office?</s>President of the United States,0,President of the United States,President of the United States,subclass of,president,president,0,President of the United States,president,0,president