In this task, you are given a sentence and question which can be answered using the sentence. Your task is to answer the question using the information from the sentence. The answer to the question is unique and it is a continuous text span from the sentence.

Ex Input:
Sentence: The natural sparkling waters of Duszniki are used in treatment of a variety of illnesses , including cardiac problems , gastrical problems . 
 Question: what is  used  in something?

Ex Output:
The natural sparkling waters of Dusznik


Ex Input:
Sentence: The north tower was quickly rebuilt as a stubby , flat-roofed structure . 
 Question: how was something rebuilt?

Ex Output:
quickly


Ex Input:
Sentence: A Fifth order Fresnel lens manufactured by Parisian glass makers Barbier and Fenestre was installed in the lantern . 
 Question: where was something installed?

Ex Output:

in the lantern


