Nested Environments

[iustifico]

I know how to achieve this:

Environment 1
        Environment 2
                Some Text
Environment 3
        Some Text...
        Environment 4
                More Text...
Environment 4
        Some Text...

Is there a way to do this:

Environment 1
        Some Text...
        Environment 2
                Some Text...
        Some Other Text <--- This Text goes to environment 1!

Let's say Our Environment is a Definition or Proposition...

Thank you!
iustifico