Task: Paraphrasing
Input (English): Question: What term, calculated by multiplying heart contractions by stroke volume, means the volume of blood pumped by the heart in one minute? 
Answer: cardiac output. 
Sentence: The term cardiac output, calculated by multiplying heart contractions by stroke volume, means the volume of blood pumped by the heart in one minute.
Output (English): The measure of blood volume the heart is able to pump over one minute is defined as cardiac output, and determined by the multiplication of stroke volume and number of heart contractions.