reason why

There’s a reason why that narrative is so uncommon in a film like this: The “tortured artist” archetype remains one of the most fascinating thematic models in storytelling, partly because its narrative is so widely believed in real life.

So it’s the reason why I can anticipate what my child might need or why a mom can do that.

There is good reason why George Orwell coined the phrase "memory hole" in "1984."

There is a reason why fresh from all the diplomatic handshakes, Sir Keir was back in the more familiar hi-vis and hard hat announcing defence jobs in Belfast.

There's a reason why Scotland have not contended.