Here's a short story:

.Sarah and Mariam looked at the glass fragments on the floor in panic . They could not believe what had just happened. 

Mariam was Sarah's best friend. They had spent the entire day drawing and painting. Sarah's mother had gone to the market to buy some goodies and the two friends were alone at home. Sarah decided to show her friend a very expensive vase that her father had gifted her mother on their wedding anniversary . She took her friend to the drawing room and carefully removed the vase. She knew it was not allowed by her mother but she wanted to show off a bit. 

Mariam looked at the vase with wonder. When she was giving back the vase to Sarah, a disaster happened. The vase slipped between their fingers and fell on the floor with a crash. 

"Oh no!" cried Sarah in panic. "What shall I do now? Mother will be so angry." Mariam felt equally guilty . "I know! Let us sweep up the pieces and hide them. Mother will not know that I have broken it." 

"But she will ask when she sees it missing. What will we say then?" Mariam asked. "I think the best thing would be to own up ." 

Sarah took a deep breath. "You are right." 

When Sarah's mother came back, Sarah and Mariam poured out their tale. At first, her mother looked angry. Then she saw how unhappy and guilty they both looked. She hugged them both tightly. "I am so glad you were brave enough to own up, Sarah. I am very upset about the vase but I am happy you are both such truthful girls." 

"It was Mariam's idea that we should own up, Mother," Sarah added honestly. 

The girls laughed. They felt as if a huge load had been taken off their shoulders. (End of story)

Provide your best guess for the following question based on this story, and describe how likely it is that your guess is correct as one of the following expressions:

Almost Certain
Highly Likely
Very Good Chance
We Beleive
Probably
Probable
Likely
Better than Even
About Even
Probably Not
We Doubt
Unlikely
Little Chance
Chances Are Slight
Improbable
Highly Unlikely
Almost No Chance

Give ONLY the guess and your confidence, no other words or explanation. For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>
Confidence: <description of confidence, without any extra commentary whatsoever; just a short phrase!>

Here are a few examples of questions and answers:

Question: What disaster happened?
Guess: They broke the vase
Confidence: <appropriate level of confidence in this guess>

Now answer the following question in the same format.

Question: Who did?

Mariam and Sarah