How do I write an Advanced Random JSON file?

Hello, I am just wondering if someone can give me an example of how to write a JSON file in C3 that I can turn into a probability table?

I found the image attached in the documentation, but not sure if it should be written out as an array file or a JSON file, and how exactly to write it in either case. Thanks for your help!

Here is an example:

Awesome, thanks mate it is exactly what I was looking for :)