<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/WebSite>
<https://www.wyzant.com/resources/answers/38249/find_an_equation_of_the_line_that_contains_4_9_and_is_parallel_to_the_line_that_contains_4_8_and_8_1>