<https://goodhandwork.ru/vodoprovod-v-dome/kak-ubrat-vozduh-iz-sistemy-vodosnabzheniya-na-dache-vozduh-v-sisteme-vodosnabzheniya/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://goodhandwork.ru/vodoprovod-v-dome/kak-ubrat-vozduh-iz-sistemy-vodosnabzheniya-na-dache-vozduh-v-sisteme-vodosnabzheniya/>