Question:
Who was the head coach of the team Lleyton Hewitt in Dec, 2013?

Context:
 Roger Rasheed is the head coach of Lleyton Hewitt from Jun, 2003 to Jan, 2007. 
 Tony Roche is the head coach of Lleyton Hewitt from Jan, 2010 to Jan, 2016. 
 Jason Stoltenberg is the head coach of Lleyton Hewitt from Jan, 2001 to Jan, 2003.

Answer:
Question:
Who was the head coach of the team Lleyton Hewitt in Dec, 2013?

Context:
 Roger Rasheed is the head coach of Lleyton Hewitt from Jun, 2003 to Jan, 2007. 
 Tony Roche is the head coach of Lleyton Hewitt from Jan, 2010 to Jan, 2016. 
 Jason Stoltenberg is the head coach of Lleyton Hewitt from Jan, 2001 to Jan, 2003.

Answer:
user
Tony Roche
assistant
Question:
Who was the head coach of the team Lleyton Hewitt in Dec, 2013?

Context:
 Roger Rasheed is the head coach of Lleyton Hewitt from Jun, 2003 to Jan, 2007. 
 Tony Roche is the head coach of Lleyton Hewitt from Jan, 2010 to Jan, 2016. 
 Jason Stoltenberg is the head coach of Lleyton Hewitt from Jan, 2001 to Jan, 2003.

Answer:
user
Jason Stoltenberg
Roger Rasheed
assistant
Question:
Who was the head coach of the team Lleyton Hewitt in Dec, 2013?

Context:
 Roger Rasheed is the head coach of Lleyton Hewitt from Jun, 2003 to Jan, 2007. 
 Tony Roche is the head coach of Lleyton Hewitt from Jan, 2010 to Jan, 2016. 
 Jason Stoltenberg is the head coach of Lleyton Hewitt from Jan, 2001 to Jan, 2003.

Answer:
user
Tony Roche
assistant