Question:
Which employer did Angela Casini work for in Aug, 2009?

Context:
 Angela Casini works for University of Groningen from Sep, 2011 to Oct, 2015. 
 Angela Casini works for École polytechnique fédérale de Lausanne from Sep, 2008 to Aug, 2011. 
 Angela Casini works for Cardiff University from Oct, 2015 to Dec, 2022.

Answer:
Question:
Which employer did Angela Casini work for in Aug, 2009?

Context:
 Angela Casini works for University of Groningen from Sep, 2011 to Oct, 2015. 
 Angela Casini works for École polytechnique fédérale de Lausanne from Sep, 2008 to Aug, 2011. 
 Angela Casini works for Cardiff University from Oct, 2015 to Dec, 2022.

Answer:
user
École polytechnique fédérale de Lausanne
assistant
Question:
Which employer did Angela Casini work for in Aug, 2009?

Context:
 Angela Casini works for University of Groningen from Sep, 2011 to Oct, 2015. 
 Angela Casini works for École polytechnique fédérale de Lausanne from Sep, 2008 to Aug, 2011. 
 Angela Casini works for Cardiff University from Oct, 2015 to Dec, 2022.

Answer:
user
Cardiff University
University of Groningen
assistant
Question:
Which employer did Angela Casini work for in Aug, 2009?

Context:
 Angela Casini works for University of Groningen from Sep, 2011 to Oct, 2015. 
 Angela Casini works for École polytechnique fédérale de Lausanne from Sep, 2008 to Aug, 2011. 
 Angela Casini works for Cardiff University from Oct, 2015 to Dec, 2022.

Answer:
user
École polytechnique fédérale de Lausanne
assistant