Definition: In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it. Your job is to determine which sentence(s) from the passage can be used to search for further information needed to answer the question.
Input: Question: When was the town located north-west of Bar-sur-Seine established? Passage:Bar-sur-Seine is located some 20km south-east of Troyes and 25km north-west of Montliot-et-Courcelles. Access to the commune is by the D671 road from Virey-sous-Bar in the north-west which passes through the town and continues south-east to Celles-sur-Ource. The D443 comes from Magnant in the north-east also passing through the village and continuing south-west to Villemorien. The D63 also goes to Magnant by a slightly longer route. The D4 goes from the town to Ville-sur-Arce in the south-east. The D49 branches from the D443 on the right bank of the Seine and goes north-west to Courtenot. There is also the railway passing through the commune from Saint-Parres-les-Vaudes in the north-east and continuing to the next station at Polisot in the south-east. Apart from the town there are the hamlets of Avaleur and La Borde. There are large forests to the north-east and south-west of the town with the rest of the commune farmland.

Output:
Bar-sur-Seine is located some 20km south-east of Troyes and 25km north-west of Montliot-et-Courcelles