\begin{frame}
  \frametitle{Conflict Equivalent Schedules}
    
  \begin{quiz}{\textwidth}{Are any of the following schedules conflict equivalent?}
    {\def\scheduleWidth{1cm}
    \begin{tcenter}
      \begin{tikzpicture}
        \schedule{$S_1$}{2}{1wV|2rV|1rV|1wV}
        \begin{scope}[yshift=-1.5cm]
        \schedule{$S_2$}{2}{1wV|1rV|2rV|1wV}
        \end{scope}
        \begin{scope}[yshift=-3cm]
        \schedule{$S_3$}{2}{2rV|1wV|1rV|1wV}
        \end{scope}
      \end{tikzpicture}
    \end{tcenter}
    }
    \pause
    Schedules $S_1$ and $S_2$ are conflict equivalent (RR swap).
  \end{quiz}
\end{frame}