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 consistency, answers should be in all lower cased letters.

Category: THE LOVE BOAT 
Clue: Outriggers & kayaks are both types of this open boat
a canoe

Category: INVENTORS & INVENTIONS 
Clue: Invented by Philip Drinker in the 1920s, this closed respirator is used by patients who can't breathe on their own
an iron lung

Category: TELL ME "Y" 
Clue: Aden is the second-largest city in this Middle Eastern hot spot

yemen