Here's a short story:

Once upon a time there were a zebra and a monkey in a zoo. The zebra and the monkey had many napkins. What did the zebra and the monkey do with all the napkins? They didn't know. They ate the napkins. The zebra felt good. The monkey got a stomach ache. Why did the monkey get a stomach ache? The napkins were make out of straw. Straw is good for zebras. Straw is not good for monkeys. The monkey did not like eating the napkins. The zoo worker came and gave the monkey a pill. The pill made the monkey feel better. Now the monkey does not eat napkins. The monkey eats bananas instead of napkins. Now the monkey is always happy and feels good. The zebra does not like to eat bananas. The zebra eats all the napkins and feels good. The zebra and the monkey are both very happy. (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: Who was in the zoo?
Guess: a zebra and a monkey

Question: What did they have a lot of?
Guess: napkins

Question: What did they do with them?
Guess: Ate them

Question: How did the zebra feel after?
Guess: good

Question: And the monkey?
Guess: monkey got a stomach ache

Question: Why?
Guess: Because the napkins were made from straw

Question: Did the monkey enjoy eating them?
Guess: No

Question: What made the monkey feel better?
Guess: The pill

Now answer the following question in the same format.

Question: Wgo gave it to him?

The zoo worker