human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Perpetrator, Date, Year, Location, Country, Killed, Injured
###Question: What is Country, when Killed is "100.9", and when Year is greater than 1939.9?
gpt
SELECT Country FROM table WHERE Killed = 100.9 AND Year > 1939.9