Task: Question Answering
Input (English): Context: Luckily , my roomates left their keys at a friends place while they are up north . So got a hold of him and could finally get into my apartment . I was ready to beat myself at this point . Think the refrigerator door got a hit or two as I tried to take out my anger and frustration on the poor fridge . 
Question: What may have caused you to get into your apartment without your keys ?
Output (English): There was a spare set with someone else .