Sol-ah - Walking till sunset - 의식 - consciously. 

Walking off to the sunset, Sol-ah consciously seems content and happy,
천.지.인 - Mind. body and Soul(spacetime, energy, and physics) In our 3D world, when all coexist in spacetime then it is conscious(의식), singularity,삼위일체, etc.
아재 gag section (answer in the following video upload):
How can you tell it's time to take a break by looking at the dog? 왜 쉬고 싶을때 개를 보는가요?
Answer to the last video's joke: 아이다 호 (Idaho)