With adhoc rdf generation from various formats.
less src/test/resources/json/in/rosenmontag.json oi src/test/resources/json/in/rosenmontag.json -trdf less src/test/resources/yml/in/HT015847062.yml oi src/test/resources/yml/in/HT015847062.yml -trdf|less
Install
wget https://dl.bintray.com/jschnasse/debian/oi_0.4.2.deb
sudo apt install ./oi_0.4.2.deb #depends on openjdk-11-jre