Task: Question Answering
Input (English): Context: Thanks . But yeah , lung x - rays were good but there was still the sound of " rice crispies " ( as my doctor put it ) in my left lung so I was given a nebulizer treatment . It ... uh ... helped . I 'll leave it at that . 
Question: What may be the reason why they needed lung xrays ?
Output (English): They had an infection .