<https://visual.republika.co.id/berita/rdkoxg314/waspadai-subvarian-omicron-ba4-dan-ba4>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://visual.republika.co.id/berita/rdkoxg314/waspadai-subvarian-omicron-ba4-dan-ba4>