Question: In what year did the submarine that sank the Tsushima Maru open to public tours?
Sentence (from "White House Visitors Office"): The White House Visitors Office is responsible for public tours of the White House, for maintaining a facility where the public can obtain information about the White House, and for other White House events such as the White House Easter Egg Roll, Holiday Open Houses, Spring and Fall Garden tours, State Arrival Ceremonies and other special events.
Relevant evidence: No