In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

[Q]: During the American Civil War , the river , with few convenient fords and fewer bridges , provided a barrier and defensive line .
[A]: During the American Civil War , the river , with few convenient fords and fewer bridges , provided a barrier and defensive line behind which movements of troops could be accomplished with little fear of attack from the river-side flank .


[Q]: Christian rock is a type of rock music that is performed by Christians .
[A]: Christian rock is a form of rock music that features lyrics focusing on matters of Christian faith , often with an emphasis on Jesus , typically performed by self-proclaimed Christian individuals .


[Q]: Breast reduction is a plastic surgery to make human breasts smaller .
[A]:
Reduction mammoplasty ( also breast reduction and reduction mammaplasty ) is the plastic surgery procedure for reducing the size of large breasts .