Find the result of natural join of DIRECTOR and PLAY. Show ALL 3 intermediate results

DIRECTOR \begin{tabular}{|c|l|} \hline DIRID & DIRECTORNAME \\ \hline \hline 501 & Hollywondy \\ \hline 502 & Goofy \\ \hline \end{tabular} \begin{tabular}{|l|r|} \multicolumn{2}{c|}{ PLAY } \\ \hline \begin{tabular}{|l|r|} \hline PLAY_NUM & DIRID \\ \hline 1001 & 501 \\ \hline 1002 & 502 \\ \hline 1003 & 501 \\ \hline 1004 & 504 \\ \hline \end{tabular} \end{tabular}