<https://urbania.se/2167/lekmiljo/trampolin-lekmiljlo/set-of-playground-trampolines-viper/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://urbania.se/2167/lekmiljo/trampolin-lekmiljlo/set-of-playground-trampolines-viper/>