Question:
Which employer did Marissa Mayer work for in Oct, 2012?

Context:
 Marissa Mayer works for Google from Jan, 1999 to Jul, 2012. 
 Marissa Mayer works for Lumi Labs from Jul, 2017 to Dec, 2022. 
 Marissa Mayer works for Yahoo from Jul, 2012 to Jun, 2017.

Answer:
Question:
Which employer did Marissa Mayer work for in Oct, 2012?

Context:
 Marissa Mayer works for Google from Jan, 1999 to Jul, 2012. 
 Marissa Mayer works for Lumi Labs from Jul, 2017 to Dec, 2022. 
 Marissa Mayer works for Yahoo from Jul, 2012 to Jun, 2017.

Answer:
user
Yahoo
assistant
Question:
Which employer did Marissa Mayer work for in Oct, 2012?

Context:
 Marissa Mayer works for Google from Jan, 1999 to Jul, 2012. 
 Marissa Mayer works for Lumi Labs from Jul, 2017 to Dec, 2022. 
 Marissa Mayer works for Yahoo from Jul, 2012 to Jun, 2017.

Answer:
user
Lumi Labs
Google
assistant
Question:
Which employer did Marissa Mayer work for in Oct, 2012?

Context:
 Marissa Mayer works for Google from Jan, 1999 to Jul, 2012. 
 Marissa Mayer works for Lumi Labs from Jul, 2017 to Dec, 2022. 
 Marissa Mayer works for Yahoo from Jul, 2012 to Jun, 2017.

Answer:
user
Yahoo
assistant