Task: Question Answering
Input (English): I just got back from a vacation spending a week at the beach with my son. It was so nice to get away for a while. What is not nice is the amount of laundry I now have to do! The first thing I did was take both of our suitcases down the hall to the laundry room. I dumped out all of our dirty clothes. I sorted into 3 piles- the towels and thick items that don't have any wash restrictions. The second pile was my clothes, which many need to be hung up, but I like to use a strong smelling detergent. The third pile consisted of all of my son's clothes, as well as any delicate items, such as bathing suits that will be washed in a free and clear detergent, as my son has skin allergies. I placed one load into the washing machine, with the appropriate detergent. When it was done, I put the clothes in the dryer or hung those that cannot dry. I added a dryer sheet and started the process over with the next batch. It take time, but sorting it out is the best way to tackle the task. 
Question: When did they start washing clothes?
Output (English): When they got back from vacation.