\begin{dropdown}

\begin{summary}

\begin{pf}

\begin{textbox}
\end{textbox}

\end{pf}

\end{summary}

\begin{captioned_figure}

captioned figure

\begin{caption}

caption

\begin{cited_blockquote}

cited blockquote

\begin{citation}
citation

\begin{thm}
thm
\end{thm}

\end{citation}

\end{cited_blockquote}

\end{caption}

\end{captioned_figure}

\end{dropdown}

\begin{exer}

\begin{summary}
poop
\end{summary}

\begin{pf}
sdsd
\end{pf}

after
\end{exer}


\begin{pf}

befopre

\begin{exer}

\begin{summary}
poop
\end{summary}

inside exer
\end{exer}

after
\end{pf}
