Add other simple questions like this to the list. Also observe what happens when you hold the pendulum over things like a live plant, dead plant, fruits and vegetables, food waste, jewelry, metal tools, earth, water or even live animals.
You will get better at phrasing the questions, focusing your mind on them, communicating with the pendulum as well as interpreting the results if you practice pendulum dowsing regularly.
To get the full “How To Do Pendulum Dowsing” article you’ll need to download it here.