I recently bought a lemon tree and wanted to learn how to care for it. I started asking about it at Google, which provided me with other questions and answers related to caring for a lemon tree. As I clicked upon some of those, others were revealed that gave me more information that was helpful.
Last March, I wrote a post about Google Related Questions, Google’s Related Questions Patent or “People Also Ask” Questions.
Google Related Questions Patent Updated to Include a Question Graph