Task: Question Answering
Input (English): Context: Eighteen minutes later , having driven an average speed of 80 mph , we 're back at our house to collect the tickets . Forty - five minutes later , we 're at the airport . Unfortunately , we 're three minutes late for the final check - in . 
Question: Why were they late for check - in at the airport ?
Output (English): They had left their tickets at home on accident .