Press the green flag then ask Gobo a question. Next press the space bar and Gobo will reveal the answer. remember it has to be a yes or no question.
https://www.google.com.au/searchq=9781740333726&rlz=1C1EODB_enAU568AU568&source=lnms&tbm=isch&sa=X&ved=0ahUKEwik0--CoZXaAhUFH5QKHbgDAKoQ_AUICygC&biw=1364&bih=677#imgrc=b-wUlymh7oa9XM:
