Here's a short story:

Moscow (CNN)More than 1 million historic documents have been destroyed in a fire at one of Russia's largest public libraries, according to the Russian state news agency Tass. 

The Russian emergency situations ministry says 147 firefighters struggled for 25 hours over the weekend to put out the blaze in the main library of the Institute for Research Information on Social Sciences in Moscow. 

The fire, which ripped through the library Friday evening, destroyed 2,000 square meters (about 2,400 square yards) of the building and caused part of the roof to collapse, according to an official statement. The Russian emergency situations ministry said the fire was particularly hard to put out because of the high temperatures, narrow passageways and the risk of the building falling down. 

Moscow's emergency ministry said the temperature inside the rubble of the library remains high and that there is still a threat that the building could collapse. 

Vladimir Fortov, president of the Russian Academy of Sciences, told the Russian news agency RIA Novosti that the fire, which destroyed 15% of all the documents in the library, reminded him of the 1986 disaster at the Chernobyl nuclear plant in Ukraine. 

"It's a major loss for science. This is the largest collection of its kind in the world, probably equivalent to the Library of Congress," Fortov told the agency. "It contains material that you can't find anywhere else and all the social science institutions use this library. What has happened here is reminiscent of Chernobyl." 

The institute's director, Yuri Pivovarov, told Tass that he fears the building cannot be restored.  (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: Did the firefighters struggle?
Guess: yes
Confidence: <appropriate level of confidence in this guess>

Question: How many were there?
Guess: 147
Confidence: <appropriate level of confidence in this guess>

Question: How long did they work on putting it out?
Guess: 25 hours
Confidence: <appropriate level of confidence in this guess>

Question: Who is Vladimir Fortov?
Guess: president of the Russian Academy of Sciences
Confidence: <appropriate level of confidence in this guess>

Now answer the following question in the same format.

Question: Why was it so hard to extinguish?

high temperatures, narrow passageways and the risk of the building falling down