<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/WebSite>
<https://www.wyzant.com/resources/answers/11053/how_many_16_ounce_bottles_would_be_needed_to_hold_the_same_total_amount_of_water_as_56_bottles_that_each_holds_20_ounces>