Questionnaire-2024/symbolic_encoding/0001_sol.tex

\begin{center}
\begin{tikzpicture}[scale=0.2]
\tikzstyle{every node}+=[inner sep=0pt]
\draw [black] (11,-26.9) circle (3);
\draw (11,-26.9) node {$s_2$};
\draw [black] (23.6,-15) circle (3);
\draw (23.6,-15) node {$s_1$};
\draw [black] (23.6,-38) circle (3);
\draw (23.6,-38) node {$s_4$};
\draw [black] (36.7,-26.9) circle (3);
\draw (36.7,-26.9) node {$s_3$};
\draw [black] (21.42,-17.06) -- (13.18,-24.84);
\fill [black] (13.18,-24.84) -- (14.11,-24.65) -- (13.42,-23.93);
\draw [black] (3.7,-26.9) -- (8,-26.9);
\fill [black] (8,-26.9) -- (7.2,-26.4) -- (7.2,-27.4);
\draw [black] (25.89,-36.06) -- (34.41,-28.84);
\fill [black] (34.41,-28.84) -- (33.48,-28.98) -- (34.12,-29.74);
\draw [black] (34.48,-24.88) -- (25.82,-17.02);
\fill [black] (25.82,-17.02) -- (26.08,-17.93) -- (26.75,-17.18);
\draw [black] (14,-26.9) -- (33.7,-26.9);
\fill [black] (33.7,-26.9) -- (32.9,-26.4) -- (32.9,-27.4);
\draw [black] (21.35,-36.02) -- (13.25,-28.88);
\fill [black] (13.25,-28.88) -- (13.52,-29.79) -- (14.18,-29.04);
\draw [black] (13.25,-28.88) -- (21.35,-36.02);
\fill [black] (21.35,-36.02) -- (21.08,-35.11) -- (20.42,-35.86);
\draw [black] (25.456,-12.658) arc (169.34618:-118.65382:2.25);
\fill [black] (26.59,-15.05) -- (27.28,-15.69) -- (27.47,-14.7);
\end{tikzpicture}
\end{center}