Task: Question Answering
Input (English): Problem: a train of 30 carriages, each of 60 meters length, when an engine also of 60 meters length is running at a speed of 60 kmph. in what time will the train cross a bridge 1.5 km long ?
Options: a. 6, b. 3.3, c. 4, d. 9, e. 2
Output (English): b