<https://spravy.goodboog.com/problem-na-obzore-who-si-vyziada-od-ciny-djalsie-informacie-tykajuce-sa-narastu-poctu-pripadov-zapalu-pluc>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://spravy.goodboog.com/problem-na-obzore-who-si-vyziada-od-ciny-djalsie-informacie-tykajuce-sa-narastu-poctu-pripadov-zapalu-pluc>