- Lead (Wikipedia)
Lead is a chemical element; it has symbol Pb (from Latin plumbum) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, lead is a shiny gray with a hint of blue. It tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable element and three of its isotopes are endpoints of major nuclear decay chains of heavier elements.
- Executive Office of the President of the United States (Wikipedia)
The Executive Office of the President of the United States (EOP) comprises the offices and agencies that support the work of the president at the center of the executive branch of the United States federal government. The office consists of several offices and agencies, such as the White House Office (the staff working closest with the president, including West Wing staff), the National Security Council, Homeland Security Council, Office of Management and Budget, Council of Economic Advisers, and others. The Eisenhower Executive Office Building houses most staff.