Question:
Who was the head coach of the team Arizona Diamondbacks in Oct, 2009?

Context:
 A. J. Hinch is the head coach of Arizona Diamondbacks from May, 2010 to Jun, 2010. 
 Buck Showalter is the head coach of Arizona Diamondbacks from Jan, 1998 to Jan, 2000. 
 Bob Melvin is the head coach of Arizona Diamondbacks from Jan, 2001 to May, 2010. 
 Kirk Gibson is the head coach of Arizona Diamondbacks from Jul, 2010 to Dec, 2022.

Answer:
Question:
Who was the head coach of the team Arizona Diamondbacks in Oct, 2009?

Context:
 A. J. Hinch is the head coach of Arizona Diamondbacks from May, 2010 to Jun, 2010. 
 Buck Showalter is the head coach of Arizona Diamondbacks from Jan, 1998 to Jan, 2000. 
 Bob Melvin is the head coach of Arizona Diamondbacks from Jan, 2001 to May, 2010. 
 Kirk Gibson is the head coach of Arizona Diamondbacks from Jul, 2010 to Dec, 2022.

Answer:
user
Bob Melvin
assistant
Question:
Who was the head coach of the team Arizona Diamondbacks in Oct, 2009?

Context:
 A. J. Hinch is the head coach of Arizona Diamondbacks from May, 2010 to Jun, 2010. 
 Buck Showalter is the head coach of Arizona Diamondbacks from Jan, 1998 to Jan, 2000. 
 Bob Melvin is the head coach of Arizona Diamondbacks from Jan, 2001 to May, 2010. 
 Kirk Gibson is the head coach of Arizona Diamondbacks from Jul, 2010 to Dec, 2022.

Answer:
user
Kirk Gibson
A. J. Hinch
Buck Showalter
assistant
Question:
Who was the head coach of the team Arizona Diamondbacks in Oct, 2009?

Context:
 A. J. Hinch is the head coach of Arizona Diamondbacks from May, 2010 to Jun, 2010. 
 Buck Showalter is the head coach of Arizona Diamondbacks from Jan, 1998 to Jan, 2000. 
 Bob Melvin is the head coach of Arizona Diamondbacks from Jan, 2001 to May, 2010. 
 Kirk Gibson is the head coach of Arizona Diamondbacks from Jul, 2010 to Dec, 2022.

Answer:
user
Bob Melvin
assistant