Here's a short story:

A geodesic dome is a hemispherical thin-shell structure (lattice-shell) based on a geodesic polyhedron. The triangular elements of the dome are structurally rigid and distribute the structural stress throughout the structure, making geodesic domes able to withstand very heavy loads for their size. 

The first dome that could be called "geodesic" in every respect was designed after World War I by Walther Bauersfeld, chief engineer of the Carl Zeiss optical company, for a planetarium to house his planetarium projector. A first, small dome was patented, constructed by the firm of Dykerhoff and Wydmann on the roof of the Zeiss plant in Jena, Germany. A larger dome, called "The Wonder of Jena", opened to the public in July 1926. Some 20 years later, R. Buckminster Fuller named the dome "geodesic" from field experiments with artist Kenneth Snelson at Black Mountain College in 1948 and 1949. Although Fuller was not the original inventor, he is credited with the U.S. popularization of the idea for which he received U.S. patent 2,682,235 29 June 1954. 

The geodesic dome appealed to Fuller because it was extremely strong for its weight, its "omnitriangulated" surface provided an inherently stable structure, and because a sphere encloses the greatest volume for the least surface area. (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: Who made the first geodesic dome?
Guess: Walther Bauersfeld,
Confidence: <appropriate level of confidence in this guess>

Question: When?
Guess: after World War I
Confidence: <appropriate level of confidence in this guess>

Question: What company did Bauersfeld work for?
Guess: Carl Zeiss optical company
Confidence: <appropriate level of confidence in this guess>

Question: What did he build the dome for?
Guess: his planetarium projector.
Confidence: <appropriate level of confidence in this guess>

Question: Did the dome have a patent?
Guess: yes
Confidence: <appropriate level of confidence in this guess>

Question: Did Fuller invent the geodesic dome?
Guess: no
Confidence: <appropriate level of confidence in this guess>

Question: What did he do for the dome type, then?
Guess: He popularized it.
Confidence: <appropriate level of confidence in this guess>

Question: What patent number did he receive?
Guess: 2,682,235 29
Confidence: <appropriate level of confidence in this guess>

Question: True or False: Fuller popularized the domes in Europe.
Guess: no
Confidence: <appropriate level of confidence in this guess>

Question: Where did he, then?
Guess: In the US
Confidence: <appropriate level of confidence in this guess>

Question: Which artist studied with Fuller?
Guess: Kenneth Snelson
Confidence: <appropriate level of confidence in this guess>

Question: Where?
Guess: Black Mountain College i
Confidence: <appropriate level of confidence in this guess>

Question: When?
Guess: 1948 and 1949
Confidence: <appropriate level of confidence in this guess>

Question: Where is the Wonder of Jena?
Guess: Germany
Confidence: <appropriate level of confidence in this guess>

Question: In a city of a different name?
Guess: no
Confidence: <appropriate level of confidence in this guess>

Question: Is a smaller dome in the same city?
Guess: yes
Confidence: <appropriate level of confidence in this guess>

Question: On top of what building?
Guess: the Zeiss plant
Confidence: <appropriate level of confidence in this guess>

Question: What shape is a geodesic dome based on?
Guess: geodesic polyhedron.
Confidence: <appropriate level of confidence in this guess>

Now answer the following question in the same format.

Question: What shape lends it rigidity?

triangle