This task involves asking a question, providing a set of 2 options. You are expected to choose the best answer to the question. The output will be in the form of A or B, corresponding to which option is chosen.

[EX Q]: Question:Which 20th century philosopher wrote 'Being And Nothingness' and 'Critique Of Dialectic Reason'? ,  Options: [A.wordsworth B.jean paul] 
[EX A]: B

[EX Q]: Question:What is the name of the A1 Pacific steam locomotive which was completed in 2009 and is the first of its kind built for over 50 years? ,  Options: [A.hurricane B.tornado] 
[EX A]: B

[EX Q]: Question:What city's catacombs contain the bones of over six million people? ,  Options: [A.London B.Paris] 
[EX A]:
B

