narrative: I once took apart an old thermostat. It was a very simple device with mercury held in a glass tube. Mercury changes density very easily. That is why it is used for thermostats. I put the thermostat back together when I was done.
question: Why did I put the thermostat?
original_sentence_for_question: I put the thermostat back together when I was done.
answer: I still wanted to keep the thermostat.
original_narrative_form: I once took apart an old thermostat. It was a very simple device with mercury held in a glass tube. Mercury changes density very easily. That is why it is used for thermostats. I put the thermostat back together when I was done.
question_meta: rocstories_narrative_22117_sentence_4_question_2