\documentclass{scrartcl}

\usepackage{graphics}

\usepackage[output=latex]{plantuml}
% The package renders TikZ diagram text sans-serif by default (\PlantUmlTikzFont)
% so it matches PlantUML's box metrics; no \tikzstyle font tweak needed (#14).

\begin{document}
\begin{plantuml}
class Car

Driver - Car : drives >
Car *- Wheel : have 4 >
Car -- Person : < owns
\end{plantuml}
\end{document}