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In \(△ABC\), mark the midpoints \(D\) and \(E\) of \(AB\) and \(AC\). Choose a point \(O\) on \(BC\), and join it to \(A\). Mark midpoints \(P\) and \(Q\) of \(OB\) and \(OC\). then \(RSQP\) is a \(RSQP\).