Question: In what year was the last member of the Imperial House of Japan with a full beard before Prince Tomohito of Mikasa born?
Sentence (from "Prince Tomohito of Mikasa"): He was a first cousin of Emperor Akihito, and was formerly sixth in the line of succession to the Japanese throne and the heir apparent to the princely house of Mikasa-no-miya and the title "Prince Mikasa".
Relevant evidence: No