Question: What company headquartered in San Ramon, California and third in the Fortune 500 list of the top US closely held and public corporations, owns the Petronius tower?
Sentence (from "Compliant Tower"): Compliant towers are designed to sustain significant lateral deflections and forces, and are typically used in water depths ranging from 1,500 to 3,000 feet (450 to 900 m).
Relevant evidence: No