In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.

Ex Input:
Sentence: Exotic species are also called invasive species because they threaten other species. Question: Why are exotic species also called invasive species?

Ex Output:
threaten other species


Ex Input:
Sentence: From viral infections did the first proto-oncogenes arise. Question: From what did the first proto-oncogenes arise?

Ex Output:
viral infections


Ex Input:
Sentence: Too little calcium can cause the disease osteoporosis. Question: What disease can too little calcium cause?

Ex Output:

osteoporosis


