You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

[Q]: Category: FORMER WORLD CAPITALS 
Clue: In 1998 Czar Nicholas II & his wife Alexandra were laid to rest in this city
[A]: st. petersburg


[Q]: Category: BODIES OF WATER 
Clue: This sea that extends about 1,200 miles was referred to in ancient times as the Erythraean Sea
[A]: the red sea


[Q]: Category: WORDS OF INSPIRATION 
Clue: A professor's 2007 address at Carnegie Mellon on "really achieving your childhood dreams" inspired millions under this title
[A]:
the last lecture