Task: Question Answering
Input (English): Context: They can now only be rented for special occasions . Clearly our group constitutes a special occasion . We all hopped on - well in between taking pictures - and headed to Parliament Square . We got a nice view of the bell tower that houses Big Ben ( the bell ) as well as the Parliament buildings . We spent the remainder of the morning touring Westminster Abbey with 2 Blue Badge guides . 
Question: Why are they in London ?
Output (English): They are there on a school trip .