\begin{frame}
  \frametitle{Relationship Sets with Attributes}

  
  \begin{quiz}{\textwidth}{Consequences of the semantics}
    \begin{center}
      \begin{tikzpicture}[every edge/.style={link}]
        \node[entity] (cinema) {cinema};
        \node[entity,right of=cinema, node distance=6cm] (movie) {movie};

        \node[relationship] (shows) at ($(actor)!.5!(movie)$) {shows} edge (actor) edge (movie);
        \node[attribute] (id) [below of=plays,node distance=1.7cm] {time} edge (shows);
      \end{tikzpicture}
    \end{center}
    Suppose a cinema shows a movie twice a day (at 3pm and 6pm).%
    \medskip
    
    Can this information be stored in the given schema?
  \end{quiz}
\end{frame}