Back in 2012, Google added a new search feature named People also search for, which is kind of related search but powered by Google's Knowledge Graph.
It is not all that common to see these come up, it is query dependent.
But @PigzillaSEO posted a screen shot on Twitter showing this feature in the mobile results. I can't replicate it, so I figured, even thought it is a few years old, I'd document the mobile UI we see today for this feature named people also search for.
Forum discussion at Twitter.
