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: TELEVISION 
Clue: Ray Walston was the Martian while the "my" in "My Favorite Martian" referred to him
[A]: bill bixby


[Q]: Category: THE YOU-NIVERSE 
Clue: Containing 33 vertebrae, it's also known as the vertebral column
[A]: the spine


[Q]: Category: TRANSPORTATION 
Clue: The "Baltimore" type of this sailing ship originated in the Chesapeake Bay region in the 1800s
[A]:
a clipper ship