Question:
Where was Nikos Nissiotis educated in May, 1948?

Context:
 Nikos Nissiotis attended Katholieke Universiteit Leuven from Jan, 1952 to Jan, 1953. 
 Nikos Nissiotis attended University of Basel from Jan, 1951 to Jan, 1952. 
 Nikos Nissiotis attended National and Kapodistrian University of Athens from Jan, 1942 to Jan, 1947. 
 Nikos Nissiotis attended University of Zurich from Jan, 1948 to Jan, 1949.

Answer:
Question:
Where was Nikos Nissiotis educated in May, 1948?

Context:
 Nikos Nissiotis attended Katholieke Universiteit Leuven from Jan, 1952 to Jan, 1953. 
 Nikos Nissiotis attended University of Basel from Jan, 1951 to Jan, 1952. 
 Nikos Nissiotis attended National and Kapodistrian University of Athens from Jan, 1942 to Jan, 1947. 
 Nikos Nissiotis attended University of Zurich from Jan, 1948 to Jan, 1949.

Answer:
user
University of Zurich
assistant
Question:
Where was Nikos Nissiotis educated in May, 1948?

Context:
 Nikos Nissiotis attended Katholieke Universiteit Leuven from Jan, 1952 to Jan, 1953. 
 Nikos Nissiotis attended University of Basel from Jan, 1951 to Jan, 1952. 
 Nikos Nissiotis attended National and Kapodistrian University of Athens from Jan, 1942 to Jan, 1947. 
 Nikos Nissiotis attended University of Zurich from Jan, 1948 to Jan, 1949.

Answer:
user
National and Kapodistrian University of Athens
Katholieke Universiteit Leuven
University of Basel
assistant
Question:
Where was Nikos Nissiotis educated in May, 1948?

Context:
 Nikos Nissiotis attended Katholieke Universiteit Leuven from Jan, 1952 to Jan, 1953. 
 Nikos Nissiotis attended University of Basel from Jan, 1951 to Jan, 1952. 
 Nikos Nissiotis attended National and Kapodistrian University of Athens from Jan, 1942 to Jan, 1947. 
 Nikos Nissiotis attended University of Zurich from Jan, 1948 to Jan, 1949.

Answer:
user
University of Zurich
assistant