Task: Explanation
Input (English): Ach Gott, wie manches Herzeleid (Oh God, how much heartache), BWV 3 , is a church cantata by Johann Sebastian Bach. He composed the chorale cantata in Leipzig for the Second Sunday after Epiphany and first performed it on 14 January 1725. It is based on the hymn published by Martin Moller in 1587. Question:  Ach Gott, wie manches Herzeleid, BWV 3 was a cantata by which "Brandenburg Concertos" composer? Answer: Johann Sebastian Bach
Output (English): Ach Gott, wie manches Herzeleid Oh God, how much heartache, BWV 3 , is a church cantata by Johann Sebastian Bach.