Here's a short story:

Chapter XX. A Sweet Memory 

Now the lovely June days had come, everything began to look really summer-like; school would soon be over, and the young people were joyfully preparing for the long vacation. 

"We are all going up to Bethlehem. We take the seashore one year and the mountains the next. Better come along," said Gus, as the boys lay on the grass after beating the Lincolns at one of the first matches of the season. 

"Can't; we are off to Pebbly Beach the second week in July. Our invalids need sea air. That one looks delicate, doesn't he?" asked Frank, giving Jack a slight rap with his bat as that young gentleman lay in his usual attitude admiring the blue hose and russet shoes which adorned his sturdy limbs. 

"Stop that, Captain! You needn't talk about invalids, when you know mother says you are not to look at a book for a month because you have studied yourself thin and headachy. I'm all right;" and Jack gave himself a sounding slap on the chest, where shone the white star of the H.B.B.C. 

"Hear the little cockerel crow! you just wait till you get into the college class, and see if you don't have to study like fun," said Gus, with unruffled composure, for he was going to Harvard next year, and felt himself already a Senior. 

"Never shall; I don't want any of your old colleges. I'm going into business as soon as I can. Ed says I may be his book-keeper, if I am ready when he starts for himself. That is much jollier than grinding away for four years, and then having to grind ever so many more at a profession," said Jack, examining with interest the various knocks and bruises with which much ball-playing had adorned his hands.  (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: What were the young people preparing for?
Guess: long vacation

Question: Where were they going?
Guess: Bethlehem

Question: Do they always take the same way?
Guess: No.

Question: Who was on the grass?
Guess: the boys

Question: What had they been doing?
Guess: Playing their first match of the season.

Question: Against who?
Guess: the Lincolns

Question: What did Gus want them to do?
Guess: Go with him?

Question: Did they?
Guess: No.

Question: Why?
Guess: They were going to Pebbly Beach.

Question: Who was Captain?
Guess: Frank

Question: Where was going?
Guess: Harvard

Question: When?
Guess: next year

Question: Is Jack?
Guess: I don't want any of your old colleges

Question: Where is he going?
Guess: into business

Question: When?
Guess: as soon as I can

Question: What would he rather do than go to school?
Guess: book-keeper

Question: For who?
Guess: Ed

Question: What did Frank call Jack?
Guess: invalid

Question: Did he react?
Guess: No.

Now answer the following question in the same format.

Question: Who told him to stop?

Jack