Established in 1994 in WA as the William H. Gates Foundation - The William H. Gates Foundation, focused on global health, was created in 1994 by Microsoft co-founder William H. "Bill" Gates, III and his wife, Melinda French Gates. Three years later, he and Melinda created the Gates Library Foundation, which worked to bring public access computers with Internet connections to libraries in the United States. Its name changed to the Gates Learning Foundation in 1999 to reflect its focus on ensuring that low-income minority students are prepared for college and have the means to attend. In 2000, to increase efficiency and communication, the two organizations merged into the Bill & Melinda Gates Foundation. In 2006, Warren Buffett, founder of Berkshire Hathaway Inc., pledged 10 million shares of Berkshire Hathaway B stock (valued at approximately $31 billion) to the Bill & Melinda Gates Foundation. Each year, 5 percent of the remaining pledged shares will be transferred to the asset trust, and starting in 2008, the total value of the previous year's gift must be spent. In 2007, the foundation restructured and created a separate organization, the Bill & Melinda Gates Foundation Trust, to oversee the foundation's assets. The trust will include the annual installments of Warren Buffett's gift to the foundation and in turn, will fund the program foundation. Bill and Melinda Gates will be the sole trustees of the asset trust. The original entity, the Bill & Melinda Gates Foundation, conducts the foundation's programmatic and grantmaking activities. Based in Seattle, Washington, the foundation also has offices in Washington, D.C.; Beijing, China; Delhi, India; and London, United Kingdom. The foundation plans to close 50 years after the deaths of its three current trustees - Bill and Melinda Gates, and Warren Buffett. Separately from the foundation, Bill and Melinda Gates and Warren Buffett have made a commitment to The Giving Pledge, an effort to invite the wealthiest individuals and families to give the majority of their wealth to philanthropic causes during their lifetime or after their death