Task: Question Answering
Input (English): Context: We did n't do much today , other than travel on a bus for 9 hours going south . We paused in Chillen ( birth place of Chilean revolutionary hero Bernardo O'Higgins ) and did some flea market shopping . i ca n't understand a word people say to me here . 
Question: What 's a possible reason they traveled on a bus ?
Output (English): Because the bus ride was cheap .