Detailed Instructions: In this task, you are given a context tweet and an answer. Your job is to generate a question for the given answer based on the given tweet paragraph. Note that your question should be answerable based on the given tweet, and the answer to your question should be the given answer.
Problem:Context: MT @HaertlG: #Canada #Ebola suspect tests NEGATIVE for Ebola, Marburg, Lassa, CCHF, RVF at Winnipeg BSL4 lab WHO (@WHO) March 25, 2014 Answer: winnipeg bsl4
Solution:
where were the tests done?