svg dragging

I am attempting to make a simple SVG where one <G> element is rotatable by dragging. Is this actually possible in SVG? Not a webpage with embedded SVG -- not an SVG empowered by 3 javascript libraries -- an SVG. I am getting very unclear results from search engines. My needs are (I think) VERY simple and libraries would be superfluous unless SVG truly lacks everything needed. A simple minimal example of one draggable element in SVG would be extremely helpful. I had one and lost it cannot find it again, google is getting more and more useless by the day.