Alexa Voice Command Room Awareness via OH

I have a Dummy Switch I use so Alexa can tell me the current Gas Price (Question about Amazon Echo Control Speak Feature - #8 by J-N-K). Currently my rule is setup so if the Dummy Switch is triggered only on my living room alexa the answer will be said.

What I am to achieve now is to detect which Alexa Device has received the question, that triggered the dummy switch and have the same Device answering speaking the answer/current gas price.

I have 3 different Alexa devices, named this:
Livingroom
Bedroom
Kitchen

I am now having difficulties to understand how the scripts and rules exactly work to determine the alexa device that was triggered. May I ask you to elaborate how that would work. I seem to be to stupid to understand it how it is wirtten right now.