Premise: Oakland [ ˈoʊklənd ] is the largest city and the county seat of Alameda County , California , United States . A major West Coast port city , Oakland is the largest city in the East Bay region of the San Francisco Bay Area , the third largest city overall in the San Francisco Bay Area , the eighth largest city in California , and the 45th largest city in the United States , with a population of 419,267 . It serves as a trade center for the San Francisco Bay Area ; its Port of Oakland is the busiest port in the San Francisco Bay , the entirety of Northern California , and the fifth busiest in the United States .
Hypothesis: Oakland, California only exists on the East Coast.
Label: CONTRADICTION