"By the way, do you know what a Shinto shrine is?" "I've a little bit of knowledge on the subject. It's a religious facility where that which is the object of worship, that called the genius loci, is enshrined."

Being knowledgeable about Japanese culture is a good thing.

He spoke knowledgeably about various topics.

Having a working knowledge of a foreign language can be beneficial in today's globalized world.

It is common knowledge that the Earth revolves around the Sun.