<https://m.solopos.com/deretan-search-engine-gagal-saingi-google-bagaimana-dengan-gatotkaca-1388102>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://m.solopos.com/deretan-search-engine-gagal-saingi-google-bagaimana-dengan-gatotkaca-1388102>