Definition: In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.
Input: Sentence: When oxygen is not bound to heme and the partial pressure of oxygen is low, hemoglobin readily binds to carbon dioxide. Question: When oxygen is not bound to heme and the partial pressure of oxygen is low, hemoglobin readily binds to what?
Output:
carbon dioxide