<https://learnomnifocus.com/lessons/manging-the-big-picture-with-omnifocus-3-wrap-up/#schema-webpage>
<http://schema.org/isPartOf>
<https://learnomnifocus.com/#schema-website>
<https://learnomnifocus.com/lessons/manging-the-big-picture-with-omnifocus-3-wrap-up/>