Here's a short story:

The West Coast or Pacific Coast is the coastline along which the contiguous Western United States meets the North Pacific Ocean. As a region, this term most often refers to the coastal states of California, Oregon and Washington. More specifically, it refers to an area defined on the east by the Cascade Range, Sierra Nevada and Mojave Desert, and on the west by the Pacific Ocean. The U.S. Census groups the five states of California, Oregon, Washington, Alaska, and Hawaii together as the Pacific States division. 

As of the 2010 Census, the estimated population of the Census Bureau's Pacific Region was approximately 47.8 million (56.9 million if Nevada and Arizona are included) – about 15.3% (18.2% with Nevada and Arizona) of US population. The largest city on the west coast of the United States is Los Angeles. 

Major cities and metropolitan areas on the West Coast include (from north to south): 

However, of these aforementioned cities and metropolitan areas, only Los Angeles/Long Beach, San Francisco and San Diego are directly on the open Pacific Ocean. 

The history of the West Coast begins with the arrival of the earliest known humans of the Americas, Paleo-Indians, crossing the Bering Strait from Eurasia into North America over a land bridge, Beringia, that existed between 45,000 BCE and 12,000 BCE (47,000–14,000 years ago). Small isolated groups of hunter-gatherers migrated alongside herds of large herbivores far into Alaska. Between 16,500 BCE and 13,500 BCE (18,500–15,500 years ago), ice-free corridors developed along the Pacific coast and valleys of North America and possibly by sea. (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's the largest city on the west coast of the US?
Guess: Los Angeles
Confidence: <appropriate level of confidence in this guess>

Question: Who were the earliest known humans to arrive on the West Coast?
Guess: Paleo-Indians
Confidence: <appropriate level of confidence in this guess>

Question: What did they cross to get here?
Guess: Bering Strait
Confidence: <appropriate level of confidence in this guess>

Question: From where?
Guess: Eurasia
Confidence: <appropriate level of confidence in this guess>

Question: Which states are usually thought of as the West coast region?
Guess: California, Oregon and Washington
Confidence: <appropriate level of confidence in this guess>

Question: What exactly is the West or Pacific Coast?
Guess: Pacific Ocean
Confidence: <appropriate level of confidence in this guess>

Question: What is the  Pacific States division?
Guess: California, Oregon, Washington, Alaska, and Hawaii
Confidence: <appropriate level of confidence in this guess>

Question: What was the population of the Pacific Region in 2010?
Guess: 47.8 million
Confidence: <appropriate level of confidence in this guess>

Question: How much would it have been with Nevada and Arizona?
Guess: 56.9 million
Confidence: <appropriate level of confidence in this guess>

Question: What percentage of the population would that be (without NV and AZ)?
Guess: 15.3%
Confidence: <appropriate level of confidence in this guess>

Question: What was the land bridge that Paleo-Indians crossed, called?
Guess: Beringia
Confidence: <appropriate level of confidence in this guess>

Question: When did it exist?
Guess: between 45,000 BCE and 12,000 BCE
Confidence: <appropriate level of confidence in this guess>

Question: Which kind of people migrated into Alaska?
Guess: hunter-gatherers
Confidence: <appropriate level of confidence in this guess>

Question: When did  ice-free corridors appear?
Guess: Between 16,500 BCE and 13,500 BCE
Confidence: <appropriate level of confidence in this guess>

Now answer the following question in the same format.

Question: Which three cities, on the open ocean, are mentioned?

Los Angeles/Long Beach, San Francisco and San Diego