Using group as trigger yet identify the triggering entity?

I have a number of contact sensors on my windows and I’m using Node Red to trigger some actions
Rather than list every entity separately I created a group as the trigger

I’d like to understand and notify which window is open for notification purposes (and to trigger certain events near the window which is opened) - is there any way to identify the triggering entity within the group?
Or should I just create a separate flow for each sensor?

(this is not what I’m actually doing, but putting it as an example)
image