<https://theconstructor.org/practical-guide/how-to-choose-right-earthmoving-equipment-pdf/43911/#faq-question-1591194228801>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://theconstructor.org/practical-guide/how-to-choose-right-earthmoving-equipment-pdf/43911/>