11.   If it does, the credit will go in roughly equal measures to the two men trading places at Los Pinos, the presidential mansion.

12.   Late one night during World War II, White House butler Alonzo Fields found Winston Churchill pacing his room in the presidential mansion with an empty glass of scotch.

13.   No one was injured, but several bullets struck the presidential mansion.

14.   On Tuesday, traces of the bacteria were found in a center that handles mail for the presidential mansion.

15.   The earlier occurrences had raised unease at the presidential mansion and prompted a tightening of security.

16.   The immediate reaction to the gunfire aimed at the presidential mansion by a Colorado tourist with a semi-automatic assault rifle was predictable.

17.   The incident, which did not endanger President Clinton, was another reminder that crime and violence can strike almost anywhere -- even outside the presidential mansion.

18.   The official explanation was that August was too hot for the horses that draw the ceremonial carriage that bears new ambassadors to the presidential mansion.

19.   The presidential mansion in the Phoenix Park became a clearinghouse for modern Ireland under Robinson.

20.   The presidential mansion, with its familiar columns and porticos, was designed by James Hoban, an Irish-born architect selected by George Washington.