Task: Question Answering
Input (English): Every time I have to go to school or work I have to always ride a public bus . I have to make sure that I am by the bus stop in order to catch the bus on time . When I get on the bus , I have to pay the bus fare . I live in a big city , so there 's always a lot of people needing to take the bus . Therefore ; sometimes I am not lucky to find a seat to sit on . In that case , I would have to stand up . Overall , riding a bus is not enjoyable because it tends to be dirty , people are very loud , and it is very crowded . Not to mention , it always smells like urine . My commute is always a long one . I usually stay on the bus for one hour . For that one hour on the bus , I listen to music or play on my cell phone . Eventually , I get to my stop . I get off the bus and reach my destination . 
Question: How did they know which bus to take?
Output (English): They have researched it to find out which bus goes to where they need to go