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Questions
begin{enumerate}
item[ref{item:earth}.] What is the diameter of Earth?
item[ref{item:dwarfs}.] How many dwarfs were there in
  emph{Sleeping Beauty?}
end{enumerate}

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Answers
begin{enumerate}
item 6400,kmlabel{item:earth}
item Sevenlabel{item:dwarfs}
end{enumerate}

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