Task: Question Answering
Input (English): Question: A train 800 m long is running at a speed of 78 km/hr. If it crosses a tunnel in 1 min, then the length of the tunnel is?

 Option A: 288 m

 Option B: 256 m

 Option C: 500 m

 Option D: 278 m

 Option E: 287 m
Output (English): Option C