Question:
Which employer did Qi Lu work for in Dec, 1997?

Context:
 Qi Lu works for IBM from Jan, 1996 to Jan, 1998. 
 Qi Lu works for Yahoo from Jan, 1998 to Jan, 2008. 
 Qi Lu works for Baidu from Jan, 2017 to Dec, 2022.

Answer:
Question:
Which employer did Qi Lu work for in Dec, 1997?

Context:
 Qi Lu works for IBM from Jan, 1996 to Jan, 1998. 
 Qi Lu works for Yahoo from Jan, 1998 to Jan, 2008. 
 Qi Lu works for Baidu from Jan, 2017 to Dec, 2022.

Answer:
user
IBM
assistant
Question:
Which employer did Qi Lu work for in Dec, 1997?

Context:
 Qi Lu works for IBM from Jan, 1996 to Jan, 1998. 
 Qi Lu works for Yahoo from Jan, 1998 to Jan, 2008. 
 Qi Lu works for Baidu from Jan, 2017 to Dec, 2022.

Answer:
user
Baidu
Yahoo
assistant
Question:
Which employer did Qi Lu work for in Dec, 1997?

Context:
 Qi Lu works for IBM from Jan, 1996 to Jan, 1998. 
 Qi Lu works for Yahoo from Jan, 1998 to Jan, 2008. 
 Qi Lu works for Baidu from Jan, 2017 to Dec, 2022.

Answer:
user
IBM
assistant