In 12 and 13, imagine that you are searching the Internet using a search engine that uses AND for and, NOT for not, and OR for or
You are trying to find the name of the fourteenth president of the United States of America. Write a logical expression to find Web pages containing the following: "United States president" and either "14th" or "fourteenth" but not "amendment" (to avoid pages about the Fourteenth Amendment to the United States Constitution).
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