instruction:
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.
question:
Sentence: Although the area was known for its healthy waters at least since the late Middle Ages , the spa was officially founded in 1769 . 
 Question: when was something known  for something?
answer:
since the late Middle Ages


question:
Sentence: Having finished his apprenticeship with Hammond , Keats registered as a medical student at Guy 's Hospital and began studying there in October 1815 . 
 Question: what did someone register  as?
answer:
a medical student


question:
Sentence: Having finished his apprenticeship with Hammond , Keats registered as a medical student at Guy 's Hospital and began studying there in October 1815 . 
 Question: where did someone register  as something?
answer:

at Guy 's Hospital