Claim: Silicon Valley is in America.
Evidence: Silicon Valley is a nickname for the southern portion of the San Francisco Bay Area , in the northern part of the U.S. state of California.
California -LRB- -LSB- kælᵻˈfɔːrnjə , _ - ni.ə -RSB- , -RRB- is the most populous state in the United States and the third most extensive by area.
Northern California , often abbreviated NorCal , is the northern portion of the U.S. state of California.