Creating figures with a caption depending on context (no markup natural convention)

Following the “principle of least surprise,” what might people expect when they see non-marked-up text beneath blockquoted text? The author’s intent is unclear. It could be:

  • <footer>
  • <cite>
  • Just plain text

I’d favor adding a little syntax in order to distinguish between different elements.

For example, figure with figcaption:

![my alt text](https://www.example.com/image.png "my title")
[A convenient caption below my image standing alone in a paragraph.]

Blockquote with footer:

> May the force be with you, always.
>
> [Master Obi-wan Kenobi.]

And an idea for blockquote with cite:

> May the force be with you, always.
>
> -- Master Obi-wan Kenobi.