to the passage below and then answer the question afterwards in the same language as the passage: Passage: Most of Stanford University is on a 8,180-acre (12.8 sq mi; 33.1 km2) campus, one of the largest in the United States. It is located on the San Francisco Peninsula, in the northwest part of the Santa Clara Valley (Silicon Valley) approximately 37 miles (60 km) southeast of San Francisco and approximately 20 miles (30 km) northwest of San Jose. In 2008, 60% of this land remained undeveloped.Stanford's main campus includes a census-designated place within unincorporated Santa Clara County, although some of the university land (such as the Stanford Shopping Center and the Stanford Research Park) is within the city limits of Palo Alto. The campus also includes much land in unincorporated San Mateo County (including the SLAC National Accelerator Laboratory and the Jasper Biological Reserve), as well as the city limits of San Jose (Stanford Woods Park), as well as in the neighborhood of Portola Hills.
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