You are given a background paragraph that describes one or more causal or qualitative relationships such as a relationship in economics or a scientific law and a story that makes use of the concepts or the relationship described in the provided paragraph. You are also given a question about the story that requires an understanding of the relationship described in the background paragraph and the story. You need to come up with an answer to the given question; the answer will be a span from either the question or the story. In order to correctly answer the given question, you need to understand the relationship mentioned in the background paragraph and should be able to use it to understand that in the story. Your answer can not consist of any word that is not mentioned in any of these: the background paragraph, the story, or the question. You can directly copy and paste a span from the story or the question while answering the given question.

Q: Background Paragraph: The example of someone having a positive experience with a drug is easy to see how drug dependence and the law of effect works. The tolerance for a drug goes up as one continues to use it after having a positive experience with a certain amount the first time.[38] It will take more and more to get that same feeling. This is when the controlled substance in an experiment would have to be modified and the experiment would really begin. The law of work for psychologist B. F. Skinner almost half a century later on the principles of operant conditioning, "a learning process by which the effect, or consequence, of a response influences the future rate of production of that response.[39].
Story: The Bennies Battalion met to discuss their experiences. They all said they always had a great experience using bennies and used the same amount each time. They told how many times they used bennies. Kathryn used it 26 times, Louise used it 30 times, Sara used it 34 times, Anne used it 46 times, Jacqueline used it 59 times, Wanda used it 68 times, and Bonnie used it 76 times.
Question: Who has a higher tolerance for bennies: Kathryn or Bonnie?

A: Bonnie.
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Q: Background Paragraph: Storing large volumes of data When storing XML to either file or database, the volume of data a system produces can often exceed reasonable limits, with a number of detriments: the access times go up as more data is read, CPU load goes up as XML data takes more power to process, and storage costs go up. By storing XML data in Fast Infoset format, data volume may be reduced by as much as 80 percent.
Story: Dan had a busy day storing XML. At 2 PM, he stored 10000 Gigabytes to the database. At 3 PM, he stored 20000 Gigabytes to the database. At 4 PM, he stored 30000 Gigabytes to the database. At 5 PM, he got dinner. At 6 PM, he stored 40000 Gigabytes to the database. At 7 PM, he stored 50000 Gigabytes to the database. At 8 PM, he went to sleep to finish storing XML in the morning.
Question: What time did CPU load go up: 3 PM or 5 PM?

A: 3 PM.
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Q: Background Paragraph: Baker's yeast is the common name for the strains of yeast commonly used in baking bread and bakery products, serving as a leavening agent which causes the bread to rise (expand and become lighter and softer) by converting the fermentable sugars present in the dough into carbon dioxide and ethanol. Baker's yeast is of the species Saccharomyces cerevisiae,[1] and is the same species (but a different strain) as the kind commonly used in alcoholic fermentation, which is called brewer's yeast.[2] Baker's yeast is also a single-cell microorganism found on and around the human body.
Story: Two groups of students made some experiments for school. Group A used brewer's yeast on flower and tried to make bread. and Group B brewed beer with brewer's yeast. the experiments happened vice-versa as well.
Question: Which group made worse beer?

A:
Group A.
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